1. 2.4Hz wireless mouse can be used within 8 metres. Built-in tiny USB Receiver. 2. Ergonomic and ultrathin design. Fashionable color. Smooth curves is suitable for both left and right hand, as well as all consumer groups. 3.This mouse has left, middle and right buttons, using high-precision optical tracking( distinguishability: 1000DPI, refresh rate: up to 3500fps).It can use sensitive and smooth cursor to control, accuracy tracking and selective operation. 4. The service life of left and right button is up to 1,000,000 clicks. Working voltage: 3V, Electric current: 15mA. It's safe and easy to use.