vekkia amber rechargeable 7 led eye-care book light,blue light blocking reading light,3 levels,1600k for strain-free, healthy eyes.up to 70 hours reading.perfect gift for bookworms. vekkia great gift for children, bookworms, kindle, ebook readers studies has shown that exposure to blue light surpresses the release of sleep hormone melatonin, and is harmful for your eyes and sleep patterns. wanna enjoy reading in bed at night? want healthy eyes & good sleep? want some gift for your kids? just try vekkia amber book light! feature: blue light blocking: 99.95% blue light blocked. easy on the eyes and sleep friendly. 3 brightness levels : easy to use, one key to turn on / off the lamp and choose different brightness level to satisfy your needs. four power modes: usb port, power bank, car charger and 5v phone charger (not included). lightweight: compact, portable and ideal for travel. take it on holidays, camping etc. packing list: 1x led book reading light 1x micro usb charging cord 1x user manual specification: material: metal+abs cct: 1600k led quantity: 5 power: 1w battery capacity: 1000mah input voltage: dc 5v charging time: about 3 hours