【4800MAH li-battery,Anytime recharging】Keyboard and mouse both can get a quick charging with the USB cable,get up to a half year of battery life on a single charge(A full charge takes about 5hrs).No need to replace batteries,no disposable batteries to deal with any longer,convenient and environmental 【Bright backlighting keyboard,Support adjustable breathing lamp】Can be adjustable to your preferred brightness and speed for an immersive lighting effect. Press［FN+DEL］to Switch light effect;［FN+↑］to increase backlit brightness;［FN+↓］to decrease backlit brightness;［FN+←/→］Light deceleration/acceleration 【Wireless 2.4GHZ 】Connected with a 2.4G wireless protocol,the keyboard and mouse share a tiny nano usb receiver.The high quality USB interface can provide efficient and stable data transmission.plug and play