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 【 USB Rechargeable 】 The book light is USB rechargeable. There are red / green indication light to show the charging. And a USB cable is included in the parcel. The large built-in 1200mAh battery just need 4 hours to be full charged. Recharge by 【 2 Color Temperature & Eyes Caring 】 The reading light with 14LEDs has 2 kinds of light that can light separately or at the same time. There are 9 modes to choose to emit a cold white light (read), white of the day (work ) or warm white (rest). It is co 【 Goose-neck & Flexible Design 】 The 360° rotating goose-neck creates more possibility of use situation as well as on orchestra stand, table or bed side, book and kindle digital reader, tablet keyboard etc. Adjustable angle 90 ° clamp design and silicon 【 Working Widely 】 The reading light can be mount on desk, headboard, bedstead, office table, folder, etc. You can clip it to books (night-time reading) on bed, shelves, cupboards, computers, laptops, desktops, pianos, music stands and much more. The cli 【 Purchase Guarantee 】 EECOO allows you a 24-month warranty, 30-day replacement or free refund. Make a purchase without any worries. Give your projects a total immersion quality thanks to the EECOO customized solutions