YILAYMEI Portable Torches Super Bright Beam Flashlight USB Rechargeable Charger for Astronomy Hunting

Excellent customer service, excellent well engineered product.Only one drawback is the maximum 30 second burn time .

I love this laser. Unbelievably strong - get it before someone takes it down for being too strong. Doesn't overheat - I accidentally put it in my trouser pocket whilst it was on, perhaps 5 minutes elapsed before I realised it was on - took it out and had barely any heat build up. Great quality all around except perhaps the "pattern" cap which can be a pain to get on/off.Battery life is refreshingly good and it charges in no time.

It was what it said it was. A nice laser but damn this thing is powerfull, so powerfull that my friend was convinced it wasn’t legal. Buy with caution! But aside from that it was a very good product and is quite well made for the price (:

Really bright, comes in a nice case. Delivery good. Good charging.

Great product. Very satisfied.

This is the most intense laser ever built, and its beams are helping me probe the fabric of the Universe and into my neighbors window.Inside my research lab in my shed, bright green light fills the vacuum chamber of a technological behemoth. It is the size of two tennis courts. The walls are shielded with 60cm (24in) of concrete to stop radiation leakage, and the my wife and I wear masks and hairnets to ensure the delicate electronics are not affected by our filthy selves.This is Trevor, soon to be the most powerful laser in the universe – and now it is whirring into life for its first official experiments.Unlike the continuous lasers that scan your barcodes in shops,Trevor is a pulsed laser, firing in bursts a few quintillionths of a second long. Each pulse will be capable of reaching a peak power of three petawatts – equivalent to a thousand times the electricity consumption of the whole world. A laser capable of such extremely compressed energy will help researchers to study the quantum laws underpinning reality, for example, or recreate the conditions of extreme astrophysics out there in space.We’re so pleased that the battery life had improved and that it functions in a functionally controlled manner.

I URGE ANYONE BUYING THIS TO BUY REPUTABLE SAFETY GLASSES/GOGGLES THAT PROVIDE PROTECTION FOR 568nm-1100nm.The laser is incredibly bright, I was a bit scared when I first used it in all honesty, after recently learning that a laser of this power could singe your eyeballs - EVEN FROM A REFLECTIVE SURFACE. Not only that, but cheap, green lasers usually emit INVISIBLE IR light, so STANDARD green safety goggles ARE NOT SUITABLE.I give it a 3 stars due to mixed feelings - it is incredibly powerful and have no complaints there, but I feel there is a lack of safety control on Amazon and the seller's part here.

As in an avid bird feeder/watcher, I feed all types of birds, but the mean old magpies swoop down and chase off all other birds, especially small songbirds. I’ve tried everything - from tinfoil and wind chimes, to simply clapping my hands loudly to scare away the magpies. Nothing has worked. So I bought this as a last ditch effort to keep the magpies out of my garden.Enter this laser pen. It’s actually scary how powerful this thing is!! It’s safe to say the magpies absolutely hate it! Literally no magpies are in my garden now, for fear of this mighty green laser. Very pleased with this solution.I’d highly advise using this thing with extreme caution. It’s immensely powerful, you can see the dot very clearly even in bright daytime, through a double-glazed window. The length it reaches is crazy. Hitting rooftops across the street in broad daylight. Insane!It’s way too strong to use as a toy for my cats. Even looking at the dot on the ground hurts my eyes. If it were to accidentally hit a pets/persons eyes, it would likely cause some serious vision damage. Definitely must be used responsibly. For those looking to get it as a cat toy, I’d say buy a different one as this is simply too powerful and will damage your pets eyes.Amazing product though. I’m surprised it’s being sold legally on Amazon to be honest, without even an age restriction for delivery. This thing is not for children/teens!