Function: 1. [3 Color Modes] The reading light has 3 different modes: amber, warm and natural. Amber mode (1600K) is also an eye protection mode as it blocks blue light. Warm Mode (3000K) is also an innovative reading mode as it provides a soft and sweet feeling. Natural mode (5000K) simulates natural daylight during the day. Choose the one you like freely. 2. [9 LEDs dimmable and 3 levels of brightness] The reading lamp has 9 evenly spaced LED beads. No flicker and no glare. There are 3 brightness levels adjustable from high to low. It's bright enough for you to read. And at the same time weak enough not to disturb others nearby. Enjoy private reading time. 3. [Rechargeable and long-lasting] USB charging. The built-in 1000 mAh battery provides 8 - 80 hours of powerful, non-diminishing brightness depending on the brightness setting. 4 power indicators located on the panel, so you can check how much power is left at any time: no more worrying about power outage. 4. [Stable and lightweight] The clamp is stable and durable. The maximum opening height is 1.8 inches and it is easy to clip a book up to 1 inch thick. Equipped with a flexible anti-slip pad. The weight of the reading lamp is only 100g. It's small, light and compact enough to throw in your handbag. 5. [Wide Occasions] The reading lamp features a 360-degree adjustable neck with a multi-functional non-slip clip that allows you to position the light exactly where you need it, creating the perfect private reading space for you while reading in bed, in college dorm, on the plane, train or bus. It can also be placed on a countertop, worktop, etc. Specification: Product use: 1000 mA lithium polymer battery White light color temperature: 5500-6000K Warm light color temperature: 3000-3200K Amber color temperature: 1200-1300K Product voltage: 4.5V Product weight: 128 grams (including packaging) Package List: 1 * reading lamp 1*USB cable Note: