RazerViper Ultimate Lightweight Wireless Gaming Mouse & RGB Charging Dock: Hyperspeed Wireless Technology - 20K DPI Optical Sensor - 74g Lightweight - 70 Hr Battery - Mercury White

Edit:2 Year Update:As of currently, July 2023, I have been daily driving this mouse for over 2 years. It is still going strong. The optical switches are still the most reliable and responsive switches I have ever used. Even after millions of clicks and hardcore daily usage, this thing is as reliable as the day I got it. I can count on it to make clicks exactly when I intended to, never double clicking and never false triggering. Gamers know just how important this is.Battery still easily lasts for 2 days with constant usage and RGB brightness at the default 30%. Aside from the textures on the sidegrips having been worn completely smooth where the tip of my thumb rests and some discoloration of the skates, you practically cannot tell that this mouse has ever been used.I did run into a bit of trouble with the middle click requiring harder presses to register at one point. However, all I had to do was bang the mouse a couple times on the side against my mousepad and blow on the scroll wheel with pressurized air, and it has been working normally again ever since. Truly, nothing can faze this mouse.Of course, I should address that during those 2 years, Razer has updated the Viper series. To put it bluntly, the Viper V2 Pro is not worth it at all unless you value a 16g lighter weight over absolutely everything, on a mouse that is already extremely light. The V2 Pro lacks tons of features including side buttons on both sides, docked charging, and RGB. It also has a smaller battery. With this original Razer Viper Ultimate practically being permanently on sale now (being a "previous generation" mouse), it just has too much value over the new Viper V2 Pro, making the decision a no-brainer.In 2023, this is still the greatest mouse I have ever used, hands down. I still find it extremely comfortable in my hands. And there is no greater feeling than to know that I can always rely on this mouse to do exactly what I want it to do, 100% of the time.Razer, you'll have to do WAY better than the Viper V2 Pro to beat this Viper Ultimate.(P.S., Synapse is still terrible. It has no problems switching profiles anymore, but now it will occasionally go crazy with the CPU usage.)_____________________________________________Original Review:To preface - I find it very difficult to find a mouse shape that is comfortable for me. My hands are roughly 19x10 cm and I use a full palm grip. My favorite mouse in terms of comfort is the Corsair Nightsword, followed by the Corsair M65. I also owned the Razer Basilisk, which is comfortable at first, but starts to cramp my hand with extended use.I have long been searching for a proper wireless mouse with a good RELIABLE connection, rechargeability/good battery life, a reasonable price, and of course above all, a good shape. It's no secret that the Viper Ultimate and the G Pro Wireless have been hailed as the best wireless mice around, but the price always kept me away from giving them a shot. Plus, I had heard about double click issues with the G Pro and the shape looked too ambidextrous for me. The more contoured shape of the Viper Ultimate and its optical switches caught my eye more. So when Prime Day came around and I saw the mouse + dock combo at $89.99, I jumped at the opportunity. (I would definitely not recommend paying $150 or even $120 for any mouse, it just isn't worth it.)Shape: 9/10I was scared of this the most since very few mice are comfortable to me. But when I started using the mouse, it felt great, to my surprise. Sure, the hump is a lower than I would have preferred, but my hand can rest very naturally on it with no cramping or fatigue. The low profile and relative lack of contours on the side make it slightly hard to pick up without it feeling like it's slipping out of your hand, but the incredibly light weight certainly makes up for it a bit. I didn't give it a 10/10 because for me, it still isn't as comfortable as the Corsair Nightsword (which feels like it was practically molded for my hand). Overall though, very comfortable and I plan to use it as my main mouse.Buttons: 9/10The main buttons are a 10/10 for me (Left click, Right click, and Scroll Wheel/Middle Click). They feel crisp and snappy with just enough feedback. I can definitely notice the optical switches. Every click feels EXTREMELY fast and responsive, but not in an oversensitive type of way. I use a mechanical keyboard with optical switches, and that has held up very well with 0 misfires or double-presses, so I am hoping for the same from this mouse. Every one of my mice with standard mechanical switches has ended up double clicking after some time and having to get replaced. My only problem with this mouse's buttons are the side buttons. They are way too recessed in the mouse (almost flush with the body) and I would definitely prefer them to stick out a bit more. Aside from that the buttons are very well built, with 0 wobble and a nice click.Software: 3/10Sorry Razer, but synapse just sucks. (Take some notes from Corsair please).The profile switching for recognizing different programs is extremely slow, causes the mouse to freeze up for a few seconds, and can even "crash" the mouse and require it to be turned on and off again. Apparently some other uses said this is because Synapse literally uploads the new profile to the mouse every time you switch programs, which is a terrible design. There IS a workaround, made possible by the fact that this mouse has on-board storage. Store the profiles you are using on the mouse's on-board storage, and you can use it without a hitch. However, this is really no excuse for Synapse to suck as there are plenty of other Razer mice that do not have on-board storage.The other big problem with Synapse is that macros do not immediately stop after you release a button - they will continue playing to completion. This severely limits the number of applications where you would choose to use a macro as this makes it too unsafe to use in many situations.Wireless: 10/10 (With the workaround stated above)Great connectivity - extremely reliable and responsive, as long as you use the workaround for Synapse. Switching profiles without the workaround was the only time the mouse would ever hiccup/disconnect. With the work around, it is just as reliable as a wired connection. And when the mouse goes into "sleep" mode, I hardly notice a delay when I wake it up.Sensor: 10/10Great sensor, combined with the low weight and low-friction gliding feet the tracking is silky smooth. Lift off distance is extremely low as well and can be further adjusted in Synapse.Weight: 10/10Extremely light. Do I sometimes miss having a sniper button to lower my DPI? Sure. But do I need it with such a light mouse? Certainly not. Any small micro-movements are extremely easy to make and it requires little to no-effort to move this mouse.Battery Life: 10/10I've been using this mouse with the default setting of 33% RGB brightness, and when I'm actively using the mouse at the computer for the whole day (12+ hours), it barely goes down to 70%. For less intensive use, you might last a whole 5 days without charging, or even a whole week. If you turn off the RGB, you could go for even longer._____________________________________________Final remarks:While the shape doesn't quite reach the 10/10 comfort that the Corsair Nightsword is for me, it is still extremely comfortable at a 9/10. Had I not experienced the Nightsword, I might have rated this a 10/10. It is comfortable enough that, combined with being wireless and having optical switches, I am completely sold on it. It is now my new primary mouse.The buttons are great, and I have high hopes for the reliability of the optical switches as Razer is the mouse maker currently using them. Wireless connectivity and and battery life are amazing. Synapse is the only thing that sucks. Razer please fix the software - it's borderline a dealbreaker that makes me reluctant to ever consider Razer products. If you ever see this mouse on sale, I highly recommend it. Just don't ever pay more than $100 for a mouse unless it was signed by Bob Ross.

I've been using Razer products for a number of years, in particular mice. This is hands down the best Razer mouse I've used so far and possibly the best mouse I've used as well. I haven't been on the bandwagon for lighter and lighter weight mice. Now I might have to jump on that train because the Viper Ultimate is so shockingly light I have a hard time believing that it still works. Previously I had the Razer Taipan and perceptually it's about 2.5 times heavier. The transition over has taken a bit of time to get used to but I do like it. It does feel like you can rapidly change the direction the mouse is moving without much effort and it could lead to better performance playing shooters in particular.Both the Taipan and the Viper Ultimate have rubber grips on the sides of the mouse, and I think It's a really nice feature of both. I've used wireless mice in the past, a Microsoft one that failed me several times in the heat of battle that used AAA batteries. I was really unsure about using a wireless mouse again but I figured it was about time to try one again, possibly the technology has improved over the years and certainly it has. I was tempted by the Razer Orochi v2 but I didn't want to be buying batteries over and over. I think the Viper Ultimate is a bit better for my personal preferences and I really do like it. I was watching some YouTube videos analyzing the latency differences between current wireless mice and wired mice. For the first time I think wireless mice are so competitive with wired mice its there is no major reason to be using a wired mouse outside of cost. The Razer Viper Ultimate is a great example of this. There may be a valid argument that the Viper 8k has superior performance over the Viper Ultimate Wireless but the mice refresh rate is so far above what most monitors can display at 1000Hz pooling rate It doesn't feel like there is a major reason to be concerned about it. Not only that but I've heard the processing required to keep track of the cursor at 8000Hz actually drops your in game frame rate by about 3-4 frames per second (depending on your hardware configuration of course). I don't see the benefit of a 8000Hz pooling rate right now. In the end I think it's a great time to transition to a wireless mouse if your interested in it and are able to afford it.I purchased the version of the Viper Ultimate which included the dock and I'm glad I did. The dock has a magnet on it which makes far easier to rest the mouse on the dock in the correct position for it to charge and you really just don't have to think about dropping the mouse on the dock, the convenience is great. My only complaint about the dock is that it's so light that sometimes I pull up on the mouse and the dock actually lifts off my desk because the magnet is strong enough to carry the weight of the dock for a few seconds before it drops. I guess the engineers of the mouse decided to add a sticky pad on the bottom of the dock to help with this but I think this is a lame solution. A weighted dock design would be far superior in my opinion and hopefully it will be included in a future release. I don't like the thought of a sticky pad on my desk, it might make a gross sticky mess (which thankfully it hasn't) and possibly will become a hard dusty mass in a few years time anyway. That's really my biggest complaint with the mouse/dock combo.A minor issue I have with the mouse itself is the Teflon feet. I wish there was a larger Teflon pad at the back end of the mouse, or maybe two separate feet that are larger that covers that back end area a bit better. In the past I've used mice for years and years on end before replacing them and the back end of the mouse get's the most feet pad wear (at least for me). I feel like the Viper Ultimate may not last as long just because the back end feet are not significant enough and they are positioned far to the sides of the mouse, to the point I'll be lifting the mouse up off the mousepad surface and then setting it down, back down back end first and dragging the plastic of the mouse on the plastic mousepad surface for a few moments before the Teflon feet make contact with the mousepad. This is not ideal in my opinion.Razer synapse, I personally don't mind running software in the background for peripherals as long as it doesn't take up too many system resources and Synapse doesn't. I HATE the way one has to log into an account to make use of some of the features. No mouse should require one to create an account to make full use of a mouse, that is a garbage idea for user convenience. I personally think convenience should be prioritized over most aspects of a products design and this causes me anger every time the synapse software asks me for the password that I usually have forgotten in the weeks that go by where I don't have to enter the password. Even if I tell it to remember my password the Synapse software still asks me for my password from time to time (I think when it does an update). It's difficult for me to put into words how rage inducing this is, mostly because it feels so unnecessary. The software should remember your password no matter what, #1 and #2 you should not need to create an account to make use of mouse software, It's trash on two fronts. Okay, Razer is a business and they feel like they require minor tracking of their customer base so they can make better business decisions and satisfy customers. I don't like it at all but hypothetically I can understand. Message to Razer: Make the Synapse software remember your log in info no matter what. This software design is just as important as your hardware design work. For over half of the use of my Razer Taipan I didn't use Synapse at all because it was such a pain in the rear end to make sure I'm logged in all the time. This may indeed only be an issue with the older version of Synapse, so far I haven't had this issue since purchasing the Viper Ultimate. I really hope Razer has resolved this and I no longer will be plagued with login requests.In the end very few products are perfect and it is hard to fault the Viper Ultimate Wireless with very much. I think it's a product worth buying and I'm glad I purchased it, I hope it will last me a few years and be a valuable part of my gaming hardware arsenal. If you are at all on the fence about purchasing this mouse, I wouldn't hesitate too much, its pretty awesome overall. It is a bit more pricy compared to some wired options but I do prefer wireless over a corded mouse even with a cord bungie (which are really great by the way). Definitely consider the Viper Ultimate Wireless mouse if your in the market for a mouse, It's a great option in my opinion, despite my complaints.