Razer DeathAdder V4 Pro Wireless Gaming Mouse: 56g Lightweight – HyperSpeed Wireless Gen-2 – Optical Scroll Wheel – Optical Switches Gen-4 – Focus Pro 45K Sensor Gen-2 – Up to 150 Hr Battery

Just buy it.
Undoubtedly, this mouse is the most exceptional mouse available on the market. While its price may be high, it is undoubtedly worth every penny. The buttons are exceptionally responsive, providing excellent feedback. The mouse exhibits zero latency and boasts the best response time among all available options. The battery life is remarkably long, although it may be reduced when operating at an 8k polling rate. If I were to rate this mouse a perfect 10 stars, I would do so without hesitation. I highly recommend purchasing this mouse, as it is well worth the investment and I would certainly consider purchasing it again in the future.

Best gaming mouse ever!
So far, this is the best mouse I’ve ever used. Fits my larger hands pretty well. Very comfortable. Has a long battery life and the wheel feels great.

Excellent so far, will update if there are issues
I waited to review so I could have some time to get a proper feel for the experience with this mouse. I got this as a replacement for my viper that started to give scrolling issues. So far the experience has been great and I am hoping this new optical scroll stands the test of time. Performance has been excellent to date and this mouse actually feels more comfortable in my hands. Battery life has not been a issue, and I hardly ever charge it although I use it on average 12 hours a day. Easy to use, responsive and excellent so far.

Fantastic Mouse with Features Most of Us Will Never Use
This is hands down the best mouse I’ve ever used. It’s incredibly comfortable, has settings to change dpi on the fly, lasts 3 days off a charge, and glides effortlessly across my mouse pad. So why am I only giving it 3 stars? For a few reasons. Sure, 45k dpi is amazing but will anyone really notice the difference between 45k and 35k in reality? I doubt it. I can’t. Same thing with 8k polling rate. Will it shave 1 or 2 ms off your time in first person shooters? Sure will, but in the end it comes down to the user’s ability. I think only pro gamers will notice a difference here.Also, at this price point it better come with all the bells and whistles. Currently there is no supported charging dock (I’m building my own) and chroma is not supported. I don’t really care about RGB, I never used it on my V2 but as a flagship product there is no excuse for this. As others have mentioned, the clicks are loud and sound hollow (my V2 sounds better) but I don’t really notice the sound while gaming and it’s really not too bad even when browsing the web.However, I will be keeping this mouse because it is by far the most comfortable mouse I have EVER used. I don’t think it’s worth it for the price though, I’d say $80-$90 tops would be fair.Do I recommend this mouse? Yes and no. Yes if you’ve got the money for it, have to have the best and want a mouse that’s super comfortable. No if you want a charging dock, rgb, and better value for your money.

I switched to this because of all optical sensors. Everything feels so good with good mouse, zero issues at all with it. I run it at 4k polling and it lasts forever on a single charge, like a week. My previous mouse the wheel sensor went on it so the accuracy of mouse wheel tracking on this one is spectacular. I’m quite happy with it. I was against wireless mice for years because of latency issues but then I watched HeroMarine who is one of the top starcraft 2 players in the world using a viper V3 wireless and I realized that it’s a skill issue not latency issues 🤣 I’ll forever be a scrub but at least I have one less cord on my desk. I can’t imagine a scenario where I’ll ever need to use 8k polling to notice any difference in response time with my skill issues. I’ve been gaming my whole life and I never got good. I’m the scrub 😢 mouse is goated though.

Shape Ergonomics 8/10, could be better if the edges were rounded off instead of pointed to allow for a more comfortable ring finger wrap around the front of the mouseMouse Switches 10/10 Clicks with the new optical switches are extremely nice and very satisfying.Scroll Wheel 11/10, probably the best scroll wheel I have ever used on a mouse. period.Sensor and Tracking 10/10 when it works 0/10 when it hitches.The new Deathadder has an extermely nice coating and the little refinements over the V3 are noticeable in the hand. What I cannot attest to is the actual reliability and performance of the mouse. I have had several hitches on the mouse where the sensor would either not track properly or it skips. Sometimes the connection would feel like it is not stable despite having the green leds on the dongle.How often does this occur varies. When I’m gaming 8/10 times the mouse is working the way it should but since there is that 20% chance where something just doesn’t behave like it should it gets quite annoying. I am expecting this to be resolved via updates from Synapse.Synapse reviewA lot of individuals complain about the Synpase bogging down your pc or causing issues with lag but I have not see anything of the sort. I set the mouse config and don’t touch it and it doesn’t effect me either. I have used other mice while the Deathadder was connected and haven’t had any issues with the program running in the background. If there is a limitation based on PC spec, that could be the reason why people have issues with the program if their pcs are not as good.For now I will rate it 2/5 and will update my review if the mouse is fixed via update or possibly I have gotten a bad mouse. This mouse would get 4.9/5 if I had no issues with hitching. the -0.1 is the pointed edge in the front that reduces the ergonomic feel.