Features: brand new and high quality 2.4GHz Wireless Connectivity (USB receiver) with built-in rechargeable 600mAh lithium battery Ergonomic designed to remitand prevent carpal tunnel syndrome. Optical laser technology for precise control Easy to use, comfortable to hold, prevent mouse hand. L/R mouse buttons, 2 thumb buttons, and a clickable scroll wheel , 1 dpi buttons(dpi +/dpi -) Package Includes: 1 x 2.4GHz Wireless Mouse 1 x USB Receiver 1 x 70CM charging cable 1 x English User Manual Specifications: Item type :2.4G RechargeableErgonomic Optical Mouse Resolution : 800dpi ;1600dpi ;2400dpi. Button : 6 buttons Maximum operating range: 10m/33FT Charging cable length: approx 70CM/27.56in Material : ABS Button life : 5 million times Battery capacity: Rechargeable 600mAh lithium battery Voltage/Current: 3.7V/10mA :Item size :approx1 0.5x7.7x6.2cm/4.13x3.03x2.44in Item weight: 93g (Including USB receiver weight) System Requirements : Windows98/Me/2000/XP/Vista/Win7/Win8/win10/Win11 or MacOS latest. note: How to USE 1: First open the back cover of the mouse, take out the USB receiver, and insert it into the USB port of the computer. 2: Then turn on the power switch, you can use it. Three-level power saving mode: 1: Three seconds into the first sleep light flashing continuously 2: 1 minute or so to enter the secondary sleep, intermittent flashing lights 3: 8 minutes or so, go to level 3 sleep, the light goes out