I went hands-on with the new peripheral to see whether those incredible specs can equate to an incredible performance. You can change your DPI with a press of the DPI cycle button at the bottom of the mouse. The factory DPI settings are set at 400, 800 (default), 1600, 2400 & 3200, or you can fine-tune your own sensitivity setting using Razer Synapse3.

Razer demonstrated (with benchmark software it had developed itself, admittedly) that HyperSpeed boasts an even more stable performance than a wired Logitech rival. Razer did admit the difference was so negligible a human wouldn’t notice the difference, but it’s still remarkable to see its mouse offering a wireless performance equivalent to a wired connection. There’s a couple of headline specs and features here, but the most noteworthy is Razer’s new HyperSpeed technology. Gaming manufacturers have realised Bluetooth has been throttling the performance of gaming mice, with the latency and accuracy not quite high enough to compete with wired peripherals. Razer says it lasts up to 70 hours between charges, a claim that does shake out. After spending a week or so with the Viper Ultimate during heavy usage in both games and while flying through day-to-day work, we notice that it drains extremely slowly. It certainly outlasts our MacBook Pro's Magic Mouse, something we appreciated immensely, as charging peripherals is not something you want to have to do often. Razer suggests HyperSpeed is 25% faster than other wireless technologies – a bold claim given the success of Logitech’s Lightspeed. HyperSpeed connectivity gives the Viper Ultimate an excellent and stable 998Hz polling rate, which effectively means the mouse is reporting its position to the computer every millisecond for pin-point accuracy. You could accuse the Viper Ultimate of looking somewhat plain, but there’s a good reason for this. Razer has chopped away all the needless plastic to make its e-sports focused peripheral as light as possible.With a whopping 20,000 DPI (dots per inch), the Viper Ultimate is the world’s most sensitive gaming mouse. This is an impressive record, but by Razer’s own admission, this isn’t as big of a game-changer as you might expect, with the ideal sensitivity level for gamers said to be around 800-1600. I suppose it’s nice to have the option though, even if 20,000 is very much overkill. Razer Chroma RGB lighting is of course still present, boasting 16.8 million colours, but is far more understated than consumer-level gaming mice. It’s only the Razer Logo that glows, and even that can be turned off via the Razer Synapse app if users find it distracting. The Razer Viper Ultimate sports a simplistic design, prioritising performance over fashion. In fact, it looks pretty much like a traditional gaming mouse, with the green Razer logo slapped on for good measure.

Designed especially for e-sport players, the Viper Ultimate sees the same streamlined form as the wired Razer Viper, cutting off any excess fat or buttons to see the weight fall to a feather-light 74 grams. Factor in an impressive 70-hour battery life, and the Viper Ultimate is shaping up to be an extremely good wireless option for competitive gamers. Razer claims the Razer Viper battery life can last up to 70 hours – that’s with the RGB lighting turned off though, so expect the figure to be noticeably smaller if you’re unwilling to sacrifice the lightshow. The Viper Ultimate can store up to five profiles in the mouse's internal, onboard memory, which is about standard for a high-end product. You can customize and save as many profiles as you want in the Synapse software PC-side, though, and swap them out as you move games in and out of rotation.I was unable to test how accurate Razer’s battery claim is, since I was only given a few hours with the peripheral at Razer’s HQ office. I already have a review sample though, so watch out for our final review and verdict soon. The Razer Viper Ultimate also has the privilege of being the first gaming mouse to own Razer’s new optical sensor, the Focus+. The benefits this brings to Razer’s mouse include the industry’s highest DPI sensitivity and inches per second performance. Razer has concentrated its efforts into making the Viper Ultimate the absolute best performing gaming mouse in the e-sports market, and on first impressions, it’s done an outstanding job. Importantly, the Viper Ultimate feels really comfortable in my hand, and not having a cable connected is as freeing as ever. The casing is made out of plastic, but certainly still feels premium. This mouse flaunts class in every department.