(1) Product size: 140*20*15mm (2) Product weight: 29g (3) Number of buttons: 4 (4) Wireless carrier frequency: 2402 MHz - 2480 MHz (5) Wireless working channels: 16, automatic frequency hopping Rated working voltage: 3V (7) Rated operating current: 15 mA (8) Tracking system: optics (9) Speed: 14 inches per second
