Wireless transmission distance: =10m Wireless carrier frequency: 2402MHz-2480MHz Key life times: 3 million times,500 recharges System requirements: Windows2000/XP/Vista/Linux/7/8 and MAC operating system Any 360 around the use angle, as far as the control distance of more than 10 meters Ergonomic design, stylish appearance and comfortable feel. Professional optical positioning technology, more precise positioning.