3 ADJUSTABLE :800/1200/1600DPI,high precision optical sensor to match your need.You can personalize it as you like. EASY TO USE:The 2.4GHz Wireless Technology provides a stable and wireless connection up to 33ft.The USB-C receiver placed on the bottom of the mouse will be plugged into your computer's Type-C port,no additional drivers or software needed. Comfortable & Ergonomic Design:The naturally curved grip and shape of the mouse makes your hand feel comfortable even after long hours,whisper-quiet click makes you focus on what you are doing. Battery:AAA*2 ( Not included ) System requirement:Windows 2000/2003//XP/Vista/Win7/8/10/ OS/Linux Colour:Black material:plastic Package Contents: 1 x Wireless Mouse 1 x Wireless USB Receiver Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.