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