Features: Handy and compact, convenient to carry anywhere, handy to have in Power outages. Three color temperatures switchable and brightness stepless dimming. Flexible and collapsible neck makes a appropriate lighting angle. Perfect as book lights, bedside lamps, desk light, night light, ect. A perfect small gift for students, auto mechanics, pilots, teachers, and more. Specifications: Material: ABS Type: 1# (8 Leds), 2# (12Leds) (optional) Color: white, black (optional) Color temperature: 1600K - 5500K - 2800K Maximum brightness: 50 lumens Led Power: 1W Power supply: 3.7V/450mAh lithium-battery Charging voltage: 5V/1A Charging time: 40mins Lasting time: 5-15h (various with brightness) Package size: 100 * 55 * 40mm / 3.94 * 2.16 * 1.57in Package weight: 53g / 1.87ounces (Type 1) 68g / 2.4ounces (Type 2) Note: 1.Due to the different display screen and light effect, the actual color of the item might be slightly different from the color showed on the pictures. 2.Please allow a little measuring deviation due to manual measurement. Package List: 1 * Rechargeable Book Light 1 * USB Cable 1 * User Manual