A4Tech G11 Rechargeable Lithium Ion Battery Pinpoint Optic Shuttle Series Wireless USB Mouse Long life, rechargeable Lithium Ion Charging Status Indicator, battery stops charging automatically when fully charged Operating Range Up to 15 Meters Multi-Link receiver connects Up to 3 Sets KBs/Mice DPI button: 5 adjustable 800-1000-1200-1600-2000 DPI Customizable shuttle key allows added functions Transmission: 2.4G Wireless range: 15m