Lecoo WS211 Wireless Dual Mode  Mouse Lecoo WS211 Wireless Dual Mode  Mouse Brand: Lenovo Lecoo Model: WS211 Color: Black Connection: Wireless Connection: USB / Bluetooth Number of Keys: 6 Rechargeable: Yes Charging Time: 2 hours Effective Shooting Area: 10 Meters DPI: 1000-1200-1600 Current Voltage: DC 3.7V / <15mA Key Life: 3 Million Clicks Product Dimensions: 102.75×60.25×33.10 mm