Cherry JD-0100. Device interface: RF Wireless. Movement resolution: 1000 DPI, Movement detection technology: Optical. Frequency band: 2.4 GHz, Wireless range: 10 m. Keyboard dimensions (WxDxH): 460 x 200 x 31 mm, Keyboard weight: 0.583 kg, Mouse dimensions (WxDxH): 122.7 x 63.6 x 32.2 mm. Battery type: AAA/AA, Current consumption: 30 mA