TechPowerUp takes a look at the Razer Naga V2 Hyperspeed
A quote from the article:
The AA-battery driven Naga V2 Hyperspeed not only comes with Razer's latest Focus Pro 30K sensor, it also has Razer's second-generation mechanical main button switches rated for 60 million clicks, 20 buttons, as well as both 2.4 GHz wireless and Bluetooth connectivity, lasting for up to 250 or 400 hours, respectively.Razer Naga V2 Hyperspeed Review