[Dimmable & Brightness Memory] - One sensitive button to control, long touch to adjust brightness, short touch to turn on/off. The battery lights indoor can remember the last brightness level you set, so you don't have to reset it every time. [USB Rechargeable & Energy Saving] - The LED battery lights use USB charging and built-in 1000mAh large battery. The stick on lights can last a maximum of 120 hours in the darkest mode and 6 hours in the brightest mode when fully charged. [Comfortable Eye Care Lighting] - The dimmable touch lights uses a milky cover, it emits a comfortable warm white light that protects your eyes and makes you relax. [Easy to Install & Portable] - The rechargeable light built-in magnet on the back, you can stick directly to any metal surface. And you can use the upgrade tape to stick on any non-metal surface. The size of the rechargeable battery lights indoor is 18*86mm in diameter, it is portable and can be easily install in the bedroom, kitchen, under the cabinet, counter, wardrobe, desk, wall.