Product Size: 18X8.5X3.5cm Material: ABS plastic shell + metal rod Product color: black Light source: 14 LEDs included per arm (7) Power: 2.4W Power supply: 1000mAh battery Life expectancy: 10,000 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 Scope of supply: 1 x LED book lamp 1 USB charging cable 1 x Instruction Manual 1.9 Modes and Color Temperature Memory Function3 color temperatures x 3 brightness settings, 9 modes in total. Adapt to different lighting situations. 3 color temperatures from 2800K to 7000K, including normal color, relaxing color and reading color. 2.360 Adjustable Flexible GooseneckStylish design, the 360 flexible gooseneck of the LED reading light can adjust the height and angle and rotate. This will keep the light in the desired position. 3.Double Headed Lamp and Adjustable Rubber BracketThis double-headed reading lamp is brighter than other single-headed lamps. Use soft rubber to avoid damaging the clamp surface and prevent slipping. 4. [Flicker-Free Eye Protection Lamp] Equipped with LED chip, the light is evenly distributed. Soft, monotonous, flicker-free light protects your eyes and gives you a more pleasant reading and writing experience. 5. [Rechargeable Mini Size] Equipped with 1000mAh battery and USB charging cable for easy charging. Small, lightweight and compact portable reading light, perfect for reading, working, laptop, music stand, piano, bed, office.