3-color Temperature, Usb Rechargeable, E-book Led, Light Lamp. Features:  3 Color Temperature Rechargeable E-book Led Light For Kindle Paper USB Led Reading Lamp Flexible E-read Clip Book Light Full Screen, the Appearance Can Not See a Screw, the Product is Suitable for Kindle and Other Brands of Electronic Paper Book Fill Light Auxiliary Lighting and Reading Paper Books. Maximum Brightness Duration: About 3 Hours, Charging Time: About 40 Minutes; The Red Indicator Light is on when Charging, and It is Automatically Turned off when Fully Charged. Has a Brightness Memory Function, the Default is the Brightness Used Last Time; Long Press the Power Switch for 3 Seconds to Turn on the Light, the Default is 3000K Color Warm Yellow Light Color, then Short Press the Power Switch to Cycle the Light Color: 5500K White Light -4500K Warm White - Turn off the Light; Specifications: Is Batteries Included: Yes Item Type: Book Lights Warranty: Book Led Light Power Source: Rechargeable Battery Battery Type: Lithium Metal Light Source: LED Bulbs Is Batteries Required: No Model Number: Book Light Wattage: 0-5W Voltage:5V Shape Size :18.5X2.5X0.9 CM(including Book Clip)  Maximum Brightness: 50 Lumens; Three-stage Color Temperature: 3000K / 5500K /4500K Power Supply: 250MAH Ternary Polymer Lithium Battery; . We are an international seller, your order will be shipped from abroad so please allow the necessary time of minimum 14 working days for delivery right now depending on where you ship to, due to ongoing delays in postal deliveries globally.