About this item USB charging type and battery type combined - there is a switch hole and a charging port outside the lamp body. This product is 180 degree adjustable and can sense peoples movement. The internal battery does not need to be replaced, but the external battery can be used. The USB charging cable is convenient and convenient to charge. Night Human Sense Sensor: It has the function of auto light and auto light off. Human action is noticeable within a radius of 3 to 5 meters and automatically lights up. If you dont feel this action about 20 seconds after auto lighting, the light will turn off automatically. Built-in light detection resistor that only shines at night and in the dark. Double-sided tape and tape: Depending on the magnet on the back of the accessory, it can be mounted anywhere as long as it is flat iron. Two side strips and magnets can be mounted wherever an auxiliary lamp is needed. Even planes like walls and beds can be simply glued together. Available in different places, be sure to try it. Wide application: weight about 150 G. Due to its light weight, it can be quickly transported and installed anywhere. Even kids who dont have access to a big, heavy flashlight can use it. Often as a reading light, step light and night light, it can be easily installed in places such as childrens room, stairway, hallway, basement, warehouse, bathroom, etc. wardrobe, bathroom, etc.