Inca IWS-549. Device interface: RF Wireless, Purpose: PC, Recommended usage: Office. Movement resolution: 1000 DPI, Movement detection technology: Optical, Scroll type: Wheel. Frequency band: 2.4 GHz, Wireless range: 10 m. Wireless receiver interface: USB, Receiver type: nano. Keyboard dimensions (WxDxH): 460 x 172 x 23 mm, Mouse dimensions (WxDxH): 101 x 65 x 35 mm