LED lamp powered by USB can be connected to powerbank, laptop, charger and so on. There is a switch that controls light color, brightness, power on/off. You can press the according button to meet your requirement. The wire is long enough, so you can apply the light under different circumstances. Features: USB LED LAMP: Powered through a USB cable, you can connect the lamp to the powerbank, laptop, charger etc for lighting. It is so convenient to use this lamp both at home and outdoors. 3 LIGHTING MODES & ADJUSTABLE BRIGHTNESS: There are 3 lighting modes: warm white light, cold white light and natural white light. The lamp also has 10 levels of brightness adjustment. You can adjust the lighting modes and brightness levels on the switch according to different needs. HOOK & LONG WIRE: The lamp is with a hook and the wire length is about 2.5 meters. You can hang the lamp anywhere you want. Just hang it high and the wire is long enough to reach the power. SWITCH DESIGN: There is a switch on the USB wire. You can adjust the brightness, change the lighting modes, turn on/off the light through the switch. Very convenient to operate. WIDE APPLICATION: The lamp is quite suitable for outdoors, especially camping. You can hang the lamp to the tent for lighting. When there is blackout at home, you can connect the light to the powerbank for emergency. Specifications: Color: White Item Type: USB LED Lamp Material: PC Voltage: ≤5V Power: 10W Size: 6 * 6 * 9cm / 2.4 * 2.4 * 3.5in Gross Weight: 130g / 4.6oz Notes: 1. Size information is just for reference only, please allow 1-2cm (0.4-0.8") differences due to manual measurement, thanks. 2. Item color displayed in photos may be showing slightly different on your monitor since monitors are not calibrated the same. Package List: 1 * USB LED Lamp