Usage Tips:Product descriptionSize: 18 * 8.5 * 3.5cmMaterial: ABS plastic shell + metal rodProduct color: blackLight source: 14 LEDs, of which per arm (7 pieces)Power: 2.4WPower supply: 1000mAh batteryLife expectancy: 10000 hoursCharging time: 1.5 hoursColor temperature: 2800K-7000K (white light, warm white light, warm light)Working time: 60 hours in low light mode, 4 hours in high light modeDelivery content:1 x LED book lamp1 x USB charging cable1 x instruction manual1. 9 modes and color temperature memory function 3 color temperatures x 3 brightness settings, a total of 9 modes. Adaptable to different lighting situations. 3 color temperatures from 2800K to 7000K including normal color, relax color and reading color.2. 360 flexible and adjustable gooseneck Elegant design, LED reading lamp 360 degrees flexible gooseneck tube enables the height and angle to be adjusted and can be rotated. This will hold the lamp in the position you want.3. Double head lamp and adjustable rubber padded bracket This double head reading lamp is brighter than other single head lamps. With soft rubber avoids damage to the surface of the clamp, can be non-slip.4. Eye care light and no flickering Equipped with an LED chip that enables even distribution of the light. The soft, monotonous and non-flickering lighting protects your eyes and offers you a more pleasant reading and writing experience.5. Rechargeable and mini size Supplied with a 1000 mAh battery and USB charging cable, easy to charge. Lightweight and compact, small portable reading lamp, ideal for reading, working, for laptop, music stand, piano, bed, desk.