technical parameter: 2.4G wireless transmission technology, 10M wireless receiving distance, three-speed DPI adjustment design, quiet and elegant office wireless mouse, high resolution: maximum 1600 DPI high resolution fluid motion, stylish slim design: slim design, stylish appearance and portability use Specification: Colour: Black Material: ABS Button life: 5 million times Wireless distance: 10m Battery capacity: 600mAh (rechargeable) Charging cable length: 25cm Item Type: Ergonomic Optical Mouse Resolution: 800, 1200, 1600. (default 1200dpi) Operation mode: photoelectric Rated voltage/current: 3.7V/18mA Power Type: Rechargeable Type: 2.4Ghz wireless mouse Keys: 2 keys and 1 round (medium lamb) and Dpi key System Requirements: Windows 98/Me/2000/XP/Vista/Win 7/Win8/10/Vista Mac OS or latest. Product weight: 65g Product size: 11.3*5.8*2.6cm Packing weight: 120g Packing size: 13.5*8.5*4.7cm What's Included: 1*2.4G Wireless Mouse, 1*USB Receiver, 1*USB Charging Cable(25cm) Installation steps: 1. Remove the wireless mouse from the box. 2. Remove the mini receiver installed at the bottom of the mouse, insert it into the USB port of the computer, Free code, plug and play. 3. This product is built-in lithium battery. All you need to do is set the bottom switch to the ON position. A charging cable is included in the package. When the cursor movement delay occurs, please plug the charging cable into the front interface of the mouse to charge. Please try not to use it while charging