From the manufacturer Ergonomic Form Factor Engineered by top ergonomics scientists and designers, its added palm support prevents your wrist from anchoring onto work surfaces, alleviating strain and promoting better arm posture. Razer 5G Advanced Optical Sensor Its 16,000 DPI sensor ensures even the finest movement of your mouse is tracked, giving you an acute level of precision that maximizes your productivity and efficiency at work. Multi-Host Connectivity For Up To 4 Devices Pair up to 4 devices and conveniently switch between your desktop, laptop, Android tablet or TV screen with just one click, without the constant need to pair and unpair. 8 Programmable Buttons Power users, now you can work faster and smarter by assigning macros and secondary functions to any of the 8 independently programmable buttons. Extended Battery Life Of Up To 400 Hours Work without worry. The battery lasts up to 400 hours when connected via Bluetooth, and up to 200 hours when connected via 2.4GHz wireless, allowing you to power through long hours of work. Durable For Up To 50 Million Clicks Designed as the ultimate go-to mouse for productivity, the switches in the Razer Pro Click are durable for up to 50 million clicks, combining performance with longevity.