Corsair’s Nightsword v2 Wireless SD Adds a Stream Deck Button to a Gaming Mouse

Corsair has introduced the Nightsword v2 Wireless SD, a new gaming mouse built for players, streamers, and creators who want faster access to shortcuts without adding another device to the desk. Its most unusual feature is a dedicated Elgato Stream Deck button, which makes it the first gaming mouse to include direct access to the Stream Deck ecosystem.

The idea is straightforward. Pressing the Stream Deck button opens a virtual Stream Deck on screen, giving you quick access to macros, shortcuts, commands, and other actions. For streamers, that could mean switching scenes, muting audio, launching apps, triggering effects, or managing other broadcast tools. For gamers and productivity focused users, it could also mean faster access to common tasks without reaching for a keyboard shortcut or a separate Stream Deck panel.

This makes the Nightsword v2 Wireless SD more than a standard performance mouse. Corsair is clearly trying to make it useful for hybrid setups where gaming, streaming, editing, and general work often happen on the same machine.

The Stream Deck button gives the mouse a creator focused edge

Most gaming mice compete on sensor performance, weight, wireless latency, battery life, and button layout. The Nightsword v2 Wireless SD still covers those basics, but the built in Stream Deck access gives it a more specific identity.

The mouse includes eight programmable buttons in total, and those buttons can be customized through Elgato’s Marketplace. That connection to Elgato matters because Corsair owns Elgato, and the Stream Deck ecosystem is already widely used by streamers and creators. By bringing that system into a mouse, Corsair is reducing the need for another piece of hardware on the desk, at least for people who only need a smaller shortcut setup.

Corsair is also aiming at high end gaming performance

The Nightsword v2 Wireless SD is not only about streaming controls. Corsair has equipped it with its Marksman S sensor, which supports up to 33,000 DPI, 750 IPS tracking speed, and 50G acceleration. Those numbers put it in the high performance gaming mouse category, even if most players will never need to use the maximum DPI setting.

The mouse also supports an 8,000Hz polling rate in both wired and wireless modes. A higher polling rate can make input feel more responsive on high refresh rate displays, although the real benefit will depend on the player, the game, and the rest of the setup.

Battery life is rated at up to 170 hours when RGB lighting is turned off. That is an important figure because wireless gaming mice often have to balance performance features with endurance. The higher polling rate will likely reduce battery life when used heavily, but the maximum rating still gives the mouse a strong baseline for everyday use.

A useful option for streamers who do not want another device

At $129.99, the Nightsword v2 Wireless SD is clearly a premium mouse. The price makes the most sense for people who will actually use the Stream Deck button and programmable controls, not just those looking for a basic wireless gaming mouse.

For creators with limited desk space, the feature could be practical. A full Stream Deck is still more powerful for complex workflows, but having a quick virtual version tied to the mouse may be enough for simpler streaming or productivity setups. It can also help players who want one device to handle gaming controls and shortcut access.

Corsair’s new mouse shows how gaming peripherals are becoming more specialized. The Nightsword v2 Wireless SD is still a gaming mouse at its core, but its built in Stream Deck button gives it a clear role for people who play, stream, and work from the same desk.