Easy to use Just touch a button on the head, you can adjust its brightness and color temperature between 3000K-6500K. Press the button for 2 seconds: Set the color temperature to 3 levels (3000K warm light for sleeping, 4200K warm white light for relaxation, 6500K cold white light for reading). Click on the button: adjust the intensity of the light, 3 levels adjustable.LED Eye-caring Light Source Compared to old white incandescent lamps, this LED lamp has many advantages: high light output with lower energy demand, long life bulbs, no heat production, eye care, etc. Portable Design EECOO flexible reading lamp fits anywhere. Its clip-on design makes it a perfect accessory for those with limited work space. This compact LED lamp is widely used in student dormitories or as a child's bedside lamp. Specifications: Power: 3W Color temperature: 3000K-6500K Luminous flux: 50lm (Max.) Power supply: 1200mAh rechargeable battery Charging time: about 2 hours Input: Micro USB 5V / 1A Package: 1 x LED reading lamp 1 x USB cable to charge 1 x User Manual.