Note: 3 color switching: short press to switch the light color: white light, warm white and natural light switch each other. Features: Minimum brightness level as a night light can be used without disturbing your bed mate. Medium 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 operated by usb charger, plug and play, laptop usb, mobile phone adapter, car usb and etc Easy to use with Clamp Base or Stand---reading light comes with a clamp holder. The maximum width for the clip: 60mm, and placed on your desk or attached to the edge when you want to read. It saves you space, protects your eyes and makes you create the fashion feeling 360 Degree Rotating Flexible Design with Adjustable Twist Tube - The angle and height of the lamp head can be adjusted to your needs. Super non-slip silicone pad coupled with its lightweight body makes it sturdy when placed in a standing position With 24 LED bulbs and 2000mAh long-lasting battery. The design of the frosted lampshade is unique. Soft light is good and healthy for your eyes as it does not flash or produce negative radiation Product parameters: Rated voltage: DC5V Battery capacity: 2000mAh lithium battery (included ) Charging time: about 5H High brightness lighting time: about 3H Low brightness lighting time: about 24H Color temperature: 3000-6000K Package included: 1*table lamp (battery included) 1*usb rechargeable cable 1xenglish manual