Red4Power R4-M006. Device interface: RF Wireless, Purpose: office, Recommended usage: Notebook. Frequency range: 2.4 GHz, Wireless range: 10 m. Wireless receiver interface: USB, Receiver type: nano. Power source: batteries, Battery type: AA. Mouse dimensions (WxDxH): 105 x 62 x 25 mm, Mouse weight: 111 g