Package contains: white light x 4; each USB light is composed of 8 lamp beads. Voltage: 5V; Power: 4W (each 0.5W), power saving and durable. Easy to use: USB ports such as power bank, mobile phone charger and computer USB port can all be used, just plug it in. Size: 3.9*0.67*0.39 inches/100*17*10mm, compact and easy to carry, but bright enough to use. Suitable for: PC computer keyboard, book light, bedside reading light, living room corridor bedroom night light, etc.; you can put it anywhere, such as your wallet or pocket.
