Easy Setup: Simply insert the nano USB receiver (stored inside at the back of the mouse) into your computer and use the mouse instantly. 7 Buttons for more Productive: Besides the right button, left button and the wheel, the mouse has a DPI button to switch the cursor DPI between 800 / 1200 / 1600 DPI. Long Life Rechargeable Battery: Rechargeable lithium battery with an industry-high capacity lasts for 4 months with single charge (based on 2 hours non-stop use per day). Ergonomic Design: Ergonomic right hand mouse reduce stress and use more comfortably. Silent clicking allows you to work in the office, home, cafe, library without disturbing anyone around you. What You Get: Wireless Mouse, one nano USB receiver (stored in the back of the mouse), USB charging cable, welcome guide, our 24-months warranty and friendly customer service.