The Razer Viper V4 Pro has already shown up in previous rumors, with what is thought to be a camouflaged version of the mouse showing up at a Valorant tournament. Now, the successor to the Viper V3 Pro has once again been confirmed, this time by Valorant pro, Canezerra, in a livestream (via BestGamers on X). Allegedly, the Viper V4 Pro is also being used by two other Valorant players. Prosettings.net also lists League of Legends pro, Myrwn, as using the Viper V4 Pro.

The current consensus is that the Viper V4 Pro will use the same or similar internals to the DeathAdder V4 Pro, but with the symmetrical shape of the Viper V3 Pro. This means it will likely feature the new dome receiver of the DeathAdder V4 Pro with a Nordic 54 series MCU, Gen-4 Razer Optical Mouse switches, a Razer Focus Pro 45K Gen 2 sensor, a slight decrease in weight, and minor physical changes, like a new coating and slight shape tweaks. The current-gen Razer Viper V3 Pro was released in April 2024, while the DeathAdder V4 Pro was launched in July 2025; by that logic, we can expect the Viper V4 Pro to launch sometime in Q2 2026 or shortly after.

[Editor's note: Our in-depth review of the Razer DeathAdder V4 Pro is now live]

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