USB Adapters features: Our product is the wiring free projection lamp, well-made and adopted fine quality ABS material, aimed to provide you with a long-term use. Lightweight and compact size, the lamp is of a simple structure, you can use it with confidence. Features-Color: Black-Material: ABS-Size: About 8.00X8.00X4.50cm/3.14X3.14X1.77in-Battery capacity: 750mAh-Power: 1W-Charging voltage: 5V-Charging time: 2.5h-Color temperature: White(6000K)-Lamp source: LED-Adoption of good quality ABS material, fine craftsmanshlp, thoughtfully designed, you deserve to have one.-Lightweight design, you can install the lamp on the wall, and the lamp won't do damages to the wall.-The lamp comes with a simple structure, which makes it convenient for you to install and remove.-Not expensive to buy, you can get our practical and durable projection lamp at a reasonable price.-There are tow fixing methods for you to choose, you can use the stickers to stick them on the wall, or use screws to fix the lamp.