Razer Viper V4 Pro and DeathAdder V4 Pro launch with carbon fiber shells for 47g and 49g weights

Razer introduced the Viper V4 Pro and DeathAdder V4 Pro on October 13, offering gamers lighter wireless mice with updated internals. The new lineup matters because it reduces weight through carbon fiber construction while maintaining high-end sensor performance. Buyers looking for reduced fatigue during long sessions now have specific options that target sub-50-gram targets.

New carbon fiber variants reduce weight to 47g and 49g while keeping the 50K sensor

The Viper V4 Pro comes in a standard black version and a Carbon Fiber edition, while the DeathAdder V4 Pro features an ergonomic right-handed design. Both mice utilize the third-generation Razer Focus Pro 50K optical sensor, which supports a maximum 50,000 DPI. Razer claims this sensor delivers performance that ranks among the best in its class.

Spec comparison

Weight reduction is the primary hardware change, achieved by applying dry carbon fiber exteriors to the new models. The Viper V4 Pro Carbon Fiber weighs 47g, which is about 2g lighter than the standard 49g black version. The DeathAdder V4 Pro Carbon Fiber weighs 49g, cutting roughly 7g from the existing 56g model. Razer confirmed the actual weight of the Viper V4 Pro Carbon Fiber is 47.7g.

All models use fourth-generation Razer optical mouse switches rated for approximately 100 million clicks. Connectivity relies on second-generation Razer HyperSpeed wireless technology. Battery life reaches up to 180 hours when using a 1,000Hz polling rate. The standard Viper V4 Pro (Emperor Purple) costs 1,399 CNY (around $209). The Carbon Fiber versions of both the Viper and DeathAdder cost 1,999 CNY (around $298).

We previously covered the Razer Basilisk V4 Pro HyperSpeed launches, which also featured high polling rates and the same sensor class. These new releases expand Razer's wireless mouse portfolio with specific weight-focused variants. The products are available in China as of October 13. Global availability and pricing outside China remain unconfirmed.