

🎙️ Elevate your voice, own the room — wireless freedom for the modern pro
The FIFINE Wireless Microphone System K037B offers professional-grade UHF wireless audio with 20 frequency options, dual headset and lavalier microphones, and smart battery monitoring. Designed for seamless setup and broad compatibility, it’s ideal for teaching, preaching, and public speaking, delivering clear sound up to 65 feet with minimal interference.









| ASIN | B076F5W8Q5 |
| Antenna Location | Indoor/Outdoor |
| Audible Noise | 58 Decibels |
| Audio Sensitivity | 95 Decibels |
| Best Sellers Rank | #8,538 in Musical Instruments ( See Top 100 in Musical Instruments ) #179 in Wireless Lavalier Microphones & Systems |
| Brand | FIFINE |
| Built-In Media | Headset microphone, Clip-on Lavalier microphone, Body pack Transmitter, Receiver with 1/4'' Plug, Solid metal collar clip, Windscreens, 1/4'' to 1/8'' adapter-cable, 1/4'' to 1/8'' TRS adapter cable, Female 1/4'' to 1/8'' TRS adapter converter cord |
| Color | Black |
| Compatible Devices | Amplifier, Camera, Smartphone, Speaker |
| Connectivity Technology | Wireless |
| Connector Type | 1/4" TRS |
| Customer Reviews | 4.2 out of 5 stars 3,592 Reviews |
| Enclosure Material | Metal |
| Frequency Range | 565.0 MHz - 584.0 MHz |
| Frequency Response | 15 KHz |
| Hardware Platform | Camera, Smartphone |
| Item Dimensions | 2.68 x 6.38 x 7.95 inches |
| Item Type Name | Wireless Microphone System with Headset & Lavalier Lapel Mics,2pcs(receiver and transmitter) |
| Item Weight | 9.9 Ounces |
| Manufacturer | FIFINE |
| Microphone Form Factor | Lavalier |
| Model Name | wireless lapel microphone |
| Model Number | K037B |
| Number of Batteries | 2 AAA batteries required. (included) |
| Number of Channels | 1 |
| Polar Pattern | Unidirectional |
| Power Source | Battery Powered |
| Recommended Uses For Product | Indoor/Outdoor |
| Signal-to-Noise Ratio | 58 dB |
| Special Feature | Clip |
| UPC | 728290254117 |
| Unit Count | 1.0 Count |
| Warranty Description | N/a. |
A**Y
From Disappointed to Delighted!
UPDATE 7/17/18 - I am happy to change my original 2-star review to 5 stars! The first mic I got had a terrible high-end screech, and as I dialed down to the correct volume, a high-pitched digital "hiss." I played with it and could get it to reduce, but not go away. This is on a Sony RX10 Mark 4. I sent the mic back, rather than wait for an exchange, due to a deadline. To Fifine's great credit, they followed up with me. Even though I had returned the unit, they asked if I would like another one to test. Their customer service was excellent (which is why I had updated my original review to 3 stars. Good customer service is rare, and they should be recognized for it). I enjoy testing and technology, so I said that I would be willing to test another unit and determine whether I just had something wrong in the original unit, or whether the mic wasn't compatible. Today, I tested it on my interview set, using all the same settings as the lapel mic I'm presently using. I'm pleased to say that performance was stellar. Good, clean signal; no hiss. The mic element has pretty good response. I haven't distance-tested it, but I suspect it will be fine, as both the transmitter and receiver have external antennas. Unlike a lot of mics, you can change frequency as well, if there is any interference. I do have one thing I wished it had: a hotshoe mount. The receiver is strictly a box. Now I know it will be easy to get some sort of hotshoe mount bought or made and glue it on -- I plan to do that (I'll probably 3-D print it)-- not a major deal. So to sum up: Fifine took a negative experience, and turned it into a VERY positive one. The mic now works perfectly; you also get a headset mount which will be useful in some situations. The price is unbeatable. To be crystal clear: they sent this unit for me to test and provide an update. I like it so much that I will keep it, and I'll put a hotshoe mount on the receiver to make it work in the field. Definitely recommended! UPDATE 7/10: I added a star for customer service. I've been discussing the problem with them. They've been VERY supportive, and very interested in a thorough compatibility test. I'm going to try it again, and I'll update this review once I do. UPDATE 7/8: After more troubleshooting, I believe the problem is that the electronics of either the transmitter or the camera are not shielded appropriately (although I suspect the $34.95 receiver a whole lot more than an $1800 camera). I've decided to send it back - no reflection on the seller, who I haven't given enough time to respond, but I need this ready next week. ORIGINAL: I just got the mic today to connect to my Sony RX10 Mark 4 for some interviews I wanted to do. I have a Sony hotshoe mic, which has beautiful sound, but it was picking up too much reverb/echo from the room. When I connected the receiver to the camera, I immediately got a loud, high-pitched screech. I dialed down the input volume a lot and moved cables. Eventually I was able to get the background noise down to a high-pitched digital-sounding hiss. It gets dramatically worse when I turn on the transmitter, even with no mic plugged in. I tried moving the cables, changing channels,playing with the volume, but I just can't get a clean signal. It just may not be compatible with my camera. I've emailed customer service a few minutes ago; I'll give them a day or so to see what they say. Since I'm planning to do my interviews next week, if they don't respond quickly, I'll probably pick up a different brand and return this one. If the problem gets solved, I'll update the review and the stars.
T**N
Good analog mic that is good for public speaking, but may not be right for digital recording..
When I write a review, I like to be fair and honest. If I buy something that does not perform, I am not afraid to tell people. But with this mic, I am not quite sure whether it did not perform well, or if it did not perform for my purpose, which is different. Let me explain. I do a lot of outdoor videos. Recently the mic on my best camera developed a buzzing sound. It appears that the mic has gone bad. The camera takes amazing video though so I want to keep using it. So, I need an external recording device that I can record an audio track with that I can add to the video in post-production editing. I thought something like this Fifine mic would do the trick. To test this mic out I placed it next to my galaxy smartphone and another camcorder with a built-in mic and then started talking for a few seconds, recording on each device. When I reviewed the audio that was captured, I was surprised to find that the volume of the audio from this mic was significantly less than from the smartphone and the camcorder. It was not bad audio, it was just not as loud as the other two. I did some testing and found that the mic on this unit had to be within a few inches of my mouth to really pick up good and get some volume while recording digital audio on my computer. The resulting recording also seemed to be lacking in bass. But then I hooked the unit up to an amplifier and tried it that way. Completely different. The sound from the amplifier was loud, smooth and full. Nothing like what it sounded like when recording to the computer. It sounded really good. I sang a song it sounded so good. I started thinking of where I could use it to do public speaking. LOL! I am no audio expert. I can't explain why this Fifine wireless mic system sounded so good over an amplifier system and not so good when to record on my PC. It might be that it produces an analog signal instead of a digital signal and volume and bass ar lost in the conversion process from analog to digital. That is my best guess. The one thing that really surprised me with this unit is how far the reach was. I did some testing and got up to 350 feet away and had a clear signal. At about 360 feet I started to get a little interference, but I was able to go all the way out to 400 feet away from the receiver and still understand what I was saying. Of course, this was an open-air Line-of-Sight test with nothing in between the transmitter and the receiver. But still, you could easily use this thing in a football stadium. Bottom line: I think this mic will work just fine for anyone who does public speaking (like a pastor of a church). It will work for digital recording, but not very well.
B**S
A good budget option
Microphones can easily cost hundreds or even thousands of dollars. This one is obviously a budget model and you'd be correct in assuming that you're not going to get professional quality audio from a budget microphone. If I were reviewing this on the basis of audio quality alone, it wouldn't be the one I'd recommend. If you're a professional for whom perfect quality is important, this isn't for you. The question, though, isn't whether this is the best microphone on the market (it's clearly not), but whether it's a good value for the money. Overall, I think it is. I use this primarily when I'm speaking on stage. For a public speaker, I think this is a good option. The sound quality isn't perfect, but it's pretty good. While musicians will require better audio than this can deliver, it works well for speech. I even *have* used it for recorded speech in a pinch because it's better to have a mic on my lapel than to trust the on-board microphone on my camera. However, I wouldn't really recommend it for that purpose. The quality is good, but it might not be quite as good as you want if you mean for the recording to be viewed by a public audience. I was pleased with the range I can get out of this. I tend to move around quite a bit on stage, but I've never had any trouble of audio quality dropping off (or sound cutting out) even when I get relatively far away from the receiver. It's not a perfect product, but I do recommend it for the price. It's a good budget option for anyone who doesn't need professional quality and doesn't want to pay professional prices.
D**Y
FIFINe Wireless Microphone Sytem is a "Winner Winner Chicken Dinner"
Disclaimer: Although I did purchase this microphone system, FIFINE did reimburse me for the cost and ask that I provide and honest review with both Pros and Cons. Here is my review and video. I was skeptical that a wireless microphone system at this price point would offer any value at all. Imagine my surprise when I heard the great sound quality this FIFINE system provides. My first impression was of the packaging. A very nice box with simple company logo on top. Inside was a well packaged system, a thank you card, and instruction manual. The unboxing experience is always a deal breaker for me and a detail some manufacturers overlook. I want it to be enticing and to get me excited to use the product. FIFINE provided that experience for me. The wireless microphone system itself felt like a quality product in my hands, although I did feel that it wasn't something I would feel comfortable with dropping on the sidewalk or hard surface as the receiver and transmitter were made from plastic. The sound quality is acceptable to use even if you don't know how to adjust your audio files. It didn't seem to reduce ambient noise but my voice was loud and clear. I would suggest positioning the mic further from your mouth than is pictured as you can not adjust the volume on the unit itself and the mic is very sensitive. I was able to step over 80 feet away from my camera and did not loose audio and the quality remained the same throughout the test. My distance test was performed in a straight line with line of sight never being broken. Battery life is dependent on the quality of your batteries so user experiences may vary. Pros: Easy to set up All cables provided Works great for the price Sound quality is very good Use straight out of the box Cons: No way to mount to camera so receiver dangles Two types of batteries needed AA and AAA Finally, I recommend the FIFINE Wireless Microphone System. You won't be disappointed in the sound quality and ease of use. Great for use for video recording or PA use. Give it a try you won't be disappointed.
M**.
Product Performs Poorly
I'm a seasoned speaker and purchased this product as an inexpensive lavalier to work with a Fendor Passport speaker system. While the product works, in my opinion and experience, it PERFORMS POORLY. In summary, no transmitter mute button, minimal directional mic distance, and low line of sight capabilities. I researched the Q&A section in the reviews section before purchasing and it was indicated the transmitter had a mute button, which it does not. It only has an off/on switch. This means the mic is hot all the time unless you turn it off. The button is recessed and has a 2 second cycle on and off, plus the 2 second pairing to the receiver. This essentially means if your mic is off, it will take approximately 5 seconds to power your mic to respond. This is a deal breaker for me. PRO: The headset is comfortable and has a flexible wire to position the microphone to be clearly heard. CON #1: The microphone is directional and cardioid (as advertised) and needs to be approximately 1 to 2 inches away from your mouth to be picked up. This is okay for audio but visually it places a black boom mic across your cheek with a big black fuzzy dot in front of your face. Not good for PR shots. CON #2: The lavalier, which was the primary reason for me to purchase this low cost option, had the same issues as the headset for clarity. The picture included with the instructions and for the advertisement of lavalier clipped between the collar for your tie's knot, is more than 2 inches away from your mouth. I was unsuccessful in having my rich tenor voice being picked up by the mic. CON #3: Both mics have a 3 prong connection and are not universally swapped, so I could not use the same transmitter with a different microphone. CON #4: While clearly advertised as needing a clean line of sight for the transmitter and receiver to work, walking around a person, table, or chair caused interference. May of my workshops have 150 to 200 people and I walk around the room, up and down the aisles, so this was another deal breaker for me. Shure and Sennheiser are great and top brands and typically carry a higher cost. I'm hoping to find a mid-priced option to recommend for up and coming presenters. When I do, I'll update my review. In my opinion, experience, and testing, while the price is good and the product functions, it performs poorly.
S**N
I'm a Wedding DJ who has been using the Fifine lapel mic, and here's what I think...
Equipment reliability and quality are imperative for weddings. Don't let the Chinese name fool you. First of all, you have to change the battery in the transmitter AND receiver. That's a GOOD thing! I get fresh AAA and AA batteries from the dollar store, and discard them after every event. WARNING: All those other names wears the on-board battery down each time you use it, and for most sooner than later you won't be able to trust them to remain charged long enough for any event. Secondly, the distance of transmission and quality of sound is top notch. You DO have to aim the mic toward the mouth, seating it approximately nine inches below. If it angles away, the volume does decline to a large extent. Furthermore, it's not friendly with jewelry. Anything that rubs against the foam gets transmitted as scratch. Thirdly, each mic has it's own independent receiver unit. YOU DON'T HAVE TO PLUG IN SOME LARGE CLUNKY RECEIVER! This is great for 100% battery powered speaker systems, where there is no AC. Remote weddings anyone? You'll wish you had THIS unit! So, talk about total flexibility. If you pay attention to what I have written, you should be quite happy with FIFINE mics. Be SURE to buy an additional handheld as an 'emergency' backup though, but that should apply to ANY system.
M**R
DO NOT BUY...owned 2, both were completely unreliable
DO NOT BUY... I have owned 2 of them, both the same. If this was reliable, it would get 5 stars for the price, but it is 100% unreliable and therefore useless to me. I ordered this product for basic quick recording of "seminar" and short FB video for work. I knew it wouldn't be the world's best audio, but it was much better than internal camera mic's. I used the microphone for a 1.5 hour video shoot at work where we recorded short clips of our owner discussing topics. When the microphone worked, it worked great. The sound was "good enough" and totally what we were looking for. But about half the audio was unusable because the microphone would suddenly stop working for 2-3 minutes at a time. We recorded 5 videos, all 3-5 minutes long, and had to throw out two of them. I figured I got a lemon. So I exchanged it for another unit. 2nd microphone, same thing. I had to cut large chunks of a seminar video shoot from the video because the microphone would cut out for 2-3 minutes at a time and then suddenly start working again. I figured it was operator error, so I messed with the microphone the next day, and used again a couple weeks later for another video shoot. We recorded 4 short 4-5 minute videos and again had to throw out one of them due to the microphone cutting out. Another of the videos was barely usable due to clicking all over the audio, and the other two videos came out perfectly. Wish it worked. Wish I could get my money back. DO NOT BUY.
T**N
The FIFINE Wireless microphone is a great deal for the price.
I did a unboxing video of this item it is on YouTube. You can just type the name of the item (listed in the amazon ad) on YouTube and the video should come up. Channel TOON215. The kit is a great deal for the price and everything that comes with it. It came fast and was well packaged. It comes with many accessories also. I did a test outdoors on a busy street and the mic sounded pretty good. Again guys considering that this microphone cost less then $50 the minor problems I did have aren't even that bad. I used the mic during the test video and walked back and it started to break up and lose audio. However when I stood still both microphones this kit comes with sounded really clear. The lavalier microphone sounded nice out of a 1-10 on sound quality I would say about a 7-8 rating. It may have sounded louder if I placed it higher on my chest so it could pick up more audio. The headset microphone sounded AMAZING for the price. Other then the breaking up because I was moving around... it gets a 8-9 rating out of 10. The reason why I keep mentioning price is because there are not many cheap kits out there that come with this many pieces for such a low price and actually work. The audio breaking isn't that much of a big deal as long as your not doing a lot of movement and if you have somebody using headphones to monitor the audio coming from the camera. If your using this as a static(standing/sitting) still microphone... I imagine both of these little mics can be very useful. Great for documentaries, youtube channels and more. I would recommend this to a friend. Thumbs up... THANK YOU FIFINE! :)