A4Tech 7300N. Device interface: RF Wireless, Purpose: PC/server, Recommended usage: Home. Movement resolution: 2000 DPI, Movement detection technology: Optical, Scroll type: Wheel. Frequency band: 2.4 GHz, Wireless range: 15 m. Wireless receiver interface: USB, Receiver type: nano. Mouse dimensions (WxDxH): 101.3 x 63.6 x 38.7 mm, Mouse weight: 64 g