Razer Atheris Wireless Ambidextrous Gaming Mouse - True 7,200 DPI optical sensor - Up to 220 IPS / 30G - Dual 2.4 GHz and Bluetooth LE connectivity - On-the-fly Sensitivity Adjustment - Gaming-grade Tactile Scroll Wheel - 5 Independently Programmable Hyperesponse Buttons - 2.4 GHz Dongle - 1000 Hz Ultrapolling - Approximately 350 hours of Continuous Gaming Battery Life - RZ01-02170100-R3A1 - 2 Years Limited Warranty