Perixx PERIDUO-703. Device interface: RF Wireless, Purpose: PC, Recommended usage: Office. Movement resolution: 1000 DPI, Movement detection technology: Optical. Frequency band: 2.4 GHz, Wireless range: 10 m. Wireless receiver interface: USB, Receiver type: standard. Keyboard dimensions (WxDxH): 140 x 458 x 13 mm, Mouse dimensions (WxDxH): 60 x 113 x 25 mm