Features: 3 Modes 2.4GHz+BT 3.0+BT 5.0, this is a mode switch key and a BT code key, one-key switch, convenient and quick. Adjustable Resolution 5-level DPI adjustable speed: 800-1200-1600-2400-3600, switch according to different using purposes. Light Mode RGB cool marquee effect, up to 6 lighting pattern designs, and the light can be turned off. Long Tarm Standby Built-in lithium battery, 750mAh high-capacity polymer battery, can automatic asleep in 5 seconds. Strong Compatibility Suitable for notebooks, desktops, tablets, mobile phones, and other devices. Specification: Brand: HXSJ Model: T90 Color: Black Type: 2.4G wireless+BT 3.0+BT 5.0 Rechargeable: built-in lithium battery Battery capacity: 750 mAh Rated voltage/current: 3.7V/15mA Accurate tracking: professional IC positioning accuracy Number of keys: 6 keys Key life: 10 million switches Wireless distance: 10M Resolution: Five-speed DPI(800-1200-1600-2400-3600) Switch life: 10 million times Light type: 6 RGB lighting modes Operation Mode: Opto-electronic Applicable system: In BT mode-Windows(windows XP/Vista/7/8/Server 2003/2000/Win 10, etc)Android(Android4.3 above)MacOS(macOS 10.10 above is recommended) In 2.4G mode-suitable for desktop, notebook, smart TV with USB interface,etc Item size:12.8*6.3*4cm / 5.04*2.48*1.57in(L * W * H) Item weight: Approx.90g /3.17oz Package size:13.5*8.5*4.7cm / 5.31*3.35*1.85in(L * W * H) Package weight:140g /4.94oz Packing list: 1 * Three-mode Mouse 1 * USB Receiver 1 * Type-C Cable 1 * User Manual