Remark:3 Color switching:Short press to switch the light color: white light, warm white and natural light switch each other.Long press stepless dimming.Features: Minimum brightness level as a night light can be used without disturbing your bed-mate. Middle and maximum brightness level is suitable for reading or studying Built In 2000mAh Rechargeable Battery with USB Interface Design (No charger)--- table lamp can be powered by USB charger, plug and play, notebook PC USB, Mobile phone adapter, Car usb and etcEasy To Use With Clip Base Or Stand--- The reading light comes with a clamp holder .The maximum wide for clip:60mm, and placed on your desk or fixed at the edge when you want to read. It saves you space, protects your eyes and makes you create the feeling of trendiness 360 Degrees Rotating Flexible Design With Adjustable Twisted Tube-- The angle and height of the lamp head can be adjusted according to your needs.The Super anti slip silicone pad coupled with its light body makes it sturdy when placed in a standing position With 24 LED Bulbs And 2000mAh Long Life Battery .The frosted lampshade design is unique. The Soft light is good and healthy for your eyes as it does not flicker or produce negative radiationProduct parameters:Rated voltage:DC5VBattery capacity:2000mAh lithium battery(included)Charge time:About 5HHigh brightness lighting time:About 3HLow brightness lighting time:About 24HColor temperature:3000-6000KPackage included:1*table lamp(battery included)1*USB rechargeable cable1xEnglish manual