Razer Basilisk Ultimate Wireless Ergonomic Optical Gaming Mouse – 11 Programmable Buttons – Razer HyperSpeed Wireless Technology (2.4 GHz Dongle) – Focus+ Optical Gaming Sensor – Up to 20,000 DPI – On-The-Fly DPI Adjustment – 1.8 Metre Speedflex Cable – Battery Life: Up to 100 Hours (Without Lighting) – Gamer-Grade Tactile Scroll Wheel – 5 On-Board Memory Profiles – Weight: Approx 107g (Without Cable) – Includes Charging Dock – RZ01-03170100-R3A1 – 2 Years Limited Warranty