Product description Size: 18 * 8.5 * 1.8cm Specification: Material: Metal+ABS LED quantity: 2pcs Warm+3pcs Cool white LED Power: 1W Battery capacity: 1000mAh Input voltage: DC 5V Charging time: 2 hours Package content: 1x LED Book Reading Light 1x Micro USB Charging Cord (39 inch long) 1xUser Manual 1x Carry Bag 1. 3 Color 3 Brightness Flat SwitchDesigned with 5 LED bulbs and 9 Brightness modes in total, satisfying different light needs in daily life. Press the switch and hold for 3 seconds to change light color (3000K Warm White, 4500K Natural White, 6500K Cool White); Quick Click to choose brightness (Low, Medium, High). 2.No More Wasting Money on Batteries-EverBuilt-in Rechargeable 1000mAh Li-ion Battery and micro USB port. Enjoy your wireless 60 HOURS reading without charging at brightness setting (Warm, Low). 3.No Flicker Eye-ProtectionNo flicker, no shadow, no dizzy light. There are 3 Colors 3 Brightness Levels, so you can freely choose the perfect color and brightness that keeps your eyes comfortable. EYE-CARE SOFT DIFFUSED LIGHT creates a private reading space for you to enjoy your reading time without disturbing your partner or roommate. 4.Portable Multiple UseSmall in size, but rich in function. The flexible gooseneck is 360 bendable to be adjusted on right position where you want. Perfect as book lights, bedside lamps, music stand light, computer light, desk light or for headboard reading, camping, kid's night reading, study, keyboard, painting, tailoring, DIY tasks and hobbies. 5.Light and portable multifunctional clamp The clamp is adjustable up to 4 cm. It is ideal for books, computers, beds, desks, etc. The reading lamp is therefore also suitable for camping or traveling.