USB Rechargeable Lamp: Built-in 600mAh lithium-ion battery, small automatic LED night light fully charged in 2.5 hours (Comes with full instructions and usb cord compatible with charging.). It can last 4 hours in ON mode and two months in Auto mode (depending on frequency of use). This automatic led lamp is ideal if you want to light up dark places in your house or apartment without installing electrical wiring and without using batteries. High Brightness: With 12 LEDs compatible with each Automatic Night Light, the brightness of the motion sensor night light exceeds 180 lumens, and the soft and bright but glare-free warm white light of 4000K. You use them as a visual aid compatible with stairs, closets or other places in a dark environment. Easy to Install and Remove: Method1️: With the included magnetic strip and 3M adhesive tape, this night light can be stuck anywhere you want. Method2: There are hanging holes on the back of the LED sensor light, which can be hung on screws on the wall (screws are not included). Easy to install by magnet or hanging. Ideal compatible with closets and hallways and balconies.