Features: 1.【Three-tone light source】Our simple desk lamp has a dimming function. Yellow light, warm white light, or natural white light can be selected, providing extra brightness, comfortable reading, and avoiding the dazzling light damage when the light is turned on at night, and the lower brightness can also be used as a night light to help you fall asleep 2.【Long battery life of 13 hours】Built-in 1800mah high capacity lithium battery takes about 3.5 hours to fully charge our desk lamp, and it can be used for 13 hours when fully charged. 3.【Energy saving】LED lights do not heat up. Reduce electricity bills by 75% and won't overheat like other traditional lights. Keep your workspace cool and comfortable.