Note: 3 Color switching: short press to switch the light color: white light, warm white light and natural light switch. Long press stepless dimming. Features: Minimum brightness level as a night light can be used without disturbing your bedmate. Medium and maximum brightness level suitable for reading or studying Built-in 1200mAh/2400mAh rechargeable battery with USB interface design (without charger) --- the table lamp can be powered by USB charger, plug and play, usb laptop, cell phone adapter, usb car and etc Easy to use with clip base or stand --- The reading light comes with a clip holder. The maximum width for the clip: 70mm, and placed on your desk or attached to the edge when you want to read. It saves your space, protects your eyes and creates a fashionable feeling 360 degree rotatable flexible design with adjustable twist tube - The angle and height of the lamp head can be adjusted depending on your needs. The super non-slip silicone pad coupled with its lightweight body makes it sturdy when placed in a standing position Product parameters: Rated voltage: DC5V Battery capacity: 1200mAh lithium battery (included ) Charging time: About 5H High brightness lighting time: about 3H Low brightness lighting time: about 24H Battery capacity: 2400mAh lithium battery (included) High brightness lighting time: about 6H Low brightness lighting time: about 36H Color temperature: 3000-6000K Package include: 1* table lamp (battery included) 1*USB rechargeable cable 1 English manual