Features: 3 light colours & dimmable health: the table lamp has 3 light colours cool white of 6500K, warm white of 3000K and natural white of 4500K. Thanks to the touch switch, you can control the light colour and brightness, short touch to change the light colours and long touch to dim the brightness. 2000mAh battery & long light duration: the wireless table lamp is built in with a 2000mAh battery, after fully charging approx. 4 hours, the table lamp can last approx. 8-10 hours. You can charge the lamp through the USB port. .