2.4G+BT5.1 Dual Modes Wireless Transmission Technology,Energy-saving, built-in storage, no need for code, smart connection. 15M wireless receiving distance,Superior anti-interference ability. Third gear adjustment design,800-1200-1600dpi. Colorful luminous design, long press the button for 2 seconds to turn off the light. Silent design,quiet and elegant office wireless mouse. Type:2.4Ghz Rechargeable wireless mouse Model: /M103FG Dual Modes : 5 million times(Silent design) Wireless distance: 15m Work: Photoelectricity Battery capacity:500mAh(Chargeable lithium battery) Charging cable length: 25cm Resolution: 800,1200,1600.(1200dpi Default) Operation Mode:-electronic Rated voltage / current: 3.7V / 18mA Power Type:Rechargeable(Charging time 2h,Working time 150h) System requirements: Windows 98 / Me / 2000 / XP / Vista / Win 7 / Win8 / 10/Vista OS or latest. Colour:black Material:ABS Size:11.3 x 5.7 x 2.6cm Package Contents: 1 x Mouse 1 x USB Receiver 1 x USB Cable Only the above package content, other products are not included. Note: Light reflection 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.