Warranty: 3 Years Features: Adjustable DPI (800 / 1200 / 1600). Silent Clicks (3 million clicks lifespan). Ergonomic Design for comfortable usage. Wireless 2.4GHz Connectivity. 6 Responsive Buttons. Plug & Play USB Receiver. Long Battery Life. Durable ABS Build. On/Off Switch for power saving. Technical Specifications: DPI: 800 / 1200 / 1600 Buttons: 6 Connectivity: Wireless 2.4GHz Click Life: 3 Million Interface: USB 2.0 Battery: 2 × AAA (Not Included) Material: ABS On/Off Switch: Yes