COMPACT AMBIDEXTROUS DESIGN BLUE OPTICAL SENSOR, TRACKS ON MOST SURFACES SILENT BUTTONS WITH 2-WAY SCROLL WHEEL (UP / DOWN) 800-1600-2400 ADJUSTABLE DPI CONNECTS TO UP TO 3 DEVICES: 1X USB-C DONGLE, 2X BLUETOOTH 5.0 SUPPORTS LENOVO UNIFIED PAIRING RECEIVER SUPPORTS BLUETOOTH SWITFPAIR QUICK SWITCH BUTTON TO JUMP CONTROL ACROSS DEVICES RECHARGEABLE, 2 – 3 MONTHS USE, 1.5-2 HOURS TO FULLY CHARGE CHARGES WIRELESSLY THROUGH QI OR BY USB-C (CABLE PROVIDED)