Product description Size: 18 * 8.5 * 3.5 cm Material: ABS plastic shell + metal rod Product color: black Light source: 14 LEDs, of which per arm (7 pcs ) Power: 2.4W Power supply: 1000mAh battery Life expectancy: 10000 hours Charging time: 1.5 hours Color temperature: 2800K-7000K (white light, warm white light, warm light) Working time: 60 hours in low light mode, 4 hours in high light mode Package Contents 1 x LED book lamp 1 x USB Charging cable 1 x user manual 1.9 modes and color temperature memory function3 color temperatures x 3 brightness settings, 9 modes in total. 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 GooseneckElegant design, LED reading lamp 360 degree flexible gooseneck tube allows you to adjust the height and angle and lets turn around. This keeps the lamp in the position you want. 3.Double Head Lamp and Adjustable Rubber Padded BracketThis double head reading lamp is brighter than other single head lamp. With soft rubber avoids the damage to the surface of the clamp, can be non-slip. 4.Eye Care Light and No FlickeringEquipped with an LED chip that allows the light to be evenly distributed. The soft, monotonous and non-flickering lighting protects your eyes, giving you a more comfortable reading and writing experience. 5.Rechargeable and Mini SizeSupplied with a 1000mAh 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.