Circle Battle Pro LED 7 Colour Backlit Gaming Keyboard (Black) Features 7 color backlit mode, breathing light 19 key anti-ghost s mould ergonomic design, reduce fatigue for long time use 11 multimedia hotkeys high quality abs environmental protection material pass more than 30 stringent reliability testing windows independent lock advanced waterproof conductive film specifications key : 104 keys cable length : 1.8m rated operating voltage current : 5.5v / 150ma key stroke : 3.6mm key tapping times : 10000000 times port : Usb.