Description: Built In 1200mah Lithium Battery: According to different brightness, the using time is 4.5-72 hours. It will give a voice prompt when the power is insufficient. Please charge it in time Stepless Dimming Brightness: Brightness can be easily, precisely, and infinitely adjusted by long press 3s the control panel. 100% to 30% brightness optional Soft Atmosphere Light: use high quality LED, which is soft and uniform, non flicker, dimmable, no blue light, the light will not hurt your eyes when reading at night. Energy Saving: Made of ABS plastic materials and energy efficient LED bulbs, this beautiful gate shape LED desk lamp use only 4 watts of power USB Power Supply: with type c power cord. This touch bedside lamp is can be powered by a USB charger adapter, laptop, PC, power bank, USB power strip, USB charging station and etc(No battery required) Specification: Rated Voltage 5V Rated current 1A Battery capacity 1200mAh Rated power: 4W Material: ABS, electronic components Power Interface: USB type C Size: 124x90x205cm/48.82x35.43x80.71inch How to Use: Press the switch and the light will be on (the color is warm white); Press the switch again to turn off the light. Stepless dimming: when the switch is on, press and hold to enter the stepless dimming mode. The light brightness will increase from the initial brightness to 100%. Release the switch and press it again. The light will from 100% - 30%. (the light has memory function. When it is turned off and turned on again, the light brightness is the brightness of the last adjustment) Package Includes: 1 Piece Bedside Lamp 1 Piece Charging Lamp Note: 1. Please allow slightly error due to manual measurement. 2. Due to the difference between different monitors, the picture may not reflect the actual color of the item. 3. Wish you a wonderful online shopping!