The GK81 can be connected via the USB port for the fastest response times in gaming, also it can be connected via wireless using a small 2.4Ghz USB dongle/receiver which can be pair using the FN+P keys simultaneously.
CableLength: 1.5 m
Keys: 104 Keys
ProfileSwitchOptions: Blue Switch, Red
Voltage: +5V Max.
Battery: 3.7V, 1300Mah Max.
ItemSize: 435.95 * 147.01 * 28.16 mm / 17.16 * 5.8 * 1.1 in
ItemWeight: 811g / 28.6 oz