Feature: 1. 3 Modes: 2.4GHz+BT 1+BT 2, this is a mode switch key and a BT code key, one key switch, convenient and quick. 2. Adjustable Resolution: 4 level DPI adjustable speed: 800-1600-2400-3600, switch according to different using purposes. 3. Light Mode: RGB cool marquee effect, up to 15 lighting pattern designs, and the light can be turned off. 4. Long Tarm Standby: Built in li battery, 500mAh high capacity polymer battery, can automatic asleep in 5 seconds. 5. Strong Compatibility: Suitable for notebooks, desktops, tablets, mobile phones, and other devices. Specification: Specification: Color: Black Type: 2.4G wireless+BT 1+BT 2 Rechargeable: built in li battery Battery capacity: 500 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: 4 speed DPI(800-1600-2400-3600) Switch life: 10 million times Light type: 15 lighting modes Operating Mode: Opto electronic Applicable system: In BT mode: for Win(for win Vista/7/8/Server 2003/2000/Win 10, etc), for Android(for Android4.3 above), for OS X(for OS X 10.10 above is recommended) In 2.4G mode: suitable for desktop, notebook, intelligent TV with USB interface,etc Item size:12.8*6.3*4 cm / 5.04*2.48*1.57 in(L * W * H) Item weight: Approx.90g /3.17oz. Package List: 1 * Mouse 1 * USB Receiver 1 * Type C Cable 1 * User Manual