LC-Power K1000BMW. Device interface: RF Wireless, Keyboard layout: QWERTZ. Movement resolution: 800 DPI, Movement detection technology: Optical. Frequency band: 2.4 GHz, Wireless range: 10 m. Keyboard dimensions (WxDxH): 80 x 180 x 40 mm, Keyboard weight: 1.214 kg. Battery type: AAA