Features: 3-mode design, support BT 5.0, BT 3.0 and 2.4G wireless connection, easy to switch, free you from twisting cable. Adopt high-precision optical engine, fast response, accurate positioning. Silent buttons, no need to worry about disturbing others. Ergonomic design, the mouse fits your hand, not easy to fatigue, comfortable to use. Built-in 400mAh rechargeable battery, long endurance time. Specification: Type: Optical mouse Brand: HXSJ Model: T23 Color: Black Working mode: 2.4G wireless+BT3.0+BT5.0 Transmission distance: 10m Button number: 4(left/right/roller wheel/mode button) Resolution: 1600DPI(default) Keystroke lifespan: 5 million times Battery capacity: 400mAh Rated voltage/current: 3.7V/10mA System requirements: Windows 98/Me/2000/XP/Vista/Win 7/Win8/W10/Mac OS or latest. Item size: 11 * 6 * 2.5cm /4.33 * 2.36 * 0.98in Item weight: Approx. 75g /2.65oz Packing list: 1 * Mouse 1 * Charging cable 1 * User manual