4. Built-in rechargeable 2000mAh battery easily to via USB cable (included). You don't to need buy AAA batteries frequently. 3. This innovative design allows the light to be angled 39 degrees unlike any other magnetic flat light on the market. Perfect for bed headboard reading light. 2. With a built in magnetic backing, it allows the light to be placed on to any metal , OR you can also mount it using the included magnetic mounts with double sided tape, you can stick on anywhere. No tools, screws or nuts are required. Easily remove the light from the magnet mounts for charging or as a hand-held light. 1. Wall reading light uses eye-friendly LED panel, provide gentle and flicker-free lighting that 't fatigue your eyes even after long hours of use, whether it's for working, studying, or simply reading. Just tap the Contact sensor button to toggle 3 brightness level of 3000k-4500k- 6000K light, 28 LEDs - soft, moderate, and bright. 5. The battery only takes 3 hours for a full charge and can last 48 hours on soft mode, 10 hours on moderate mode and 3 hours on bright mode. for closet, garage, bedroom and hallway.