Wireless technology: 2.4 GHz, GFSK RF modulation, 80 channels, 32 bit device IDOperating distance: up to 10 mPower class: RF power 3 dBm (max. EIRP)Internal antenna type; antenna gain in dBi (typical): 2 dBi ±1 dBiOptical resolution: 800, 1200, 1600 DPI selectable by the buttonPower supply: AAA battery x 2 pcs (not included)Power consumption: 3 V DC, up to 20 mANano receiver: USB 1.1 compatible, weight 2 g, 6 x 14 x 18 mmMouse: dimensions 95 x 65 x 37 mm, net weight 58 g (without batteries)Operating conditions: -5…45 Celsius degrees, 10-80 % humidity