3-Color Lighting Mode This reading light offering three different light modes (2800K Amber Mode, 4000K Night Light Mode, 6000K General Reading Mode) and 3 adjustable brightness levels in each color mode , you can choose the comfortable light to continue reading as you wish. New Upgrade Book Light The new time display and power indicators function allows you to check the time and power at any time, to complete the reading plan and understand the power consumption in time. Flexible ; Adjustable Metal Clip DesignThe clamp of the clip-on light can open maximally 215; the light head can be turned left, right, and downside with angles of 270, 270, and 75 respectively. DO NOT turn the light head hardly to leftor right beyond 270", as it contains anelectricity cord inslde. Fast Multi Device USB Charging Standard USB rechargeable and compatible with any USB ports on your computer, adapter, or USB outlet. This rechargeable book light has a built-in 500mAh battery and 0.5 hours charging lasts about providing 1080 reading hours (depending on your brightness setting) Portable Lightweight Carry The book light Weighs only 2.11oz (60g) with a clip-on, foldable design, smaller than the palm of your hand can be put into your pocket or bag, easy to carry for travel. Shipping quantity: 2 piece