1、Universal USB interface, you can power the bulb by connecting it to power bank, computer, laptop or phone adapter via the USB port. 2、There is a hook on the bulb, convenient for you to hang it up anywhere. 3、Low power consumption, energy-saving and long service life. 4、You can switch the lighting color between cool white, warm white and nature white via the button. 5、Compact and lightweight, easy to store away and carry around. Features: Universal USB interface, you can power the bulb by connecting it to power bank, computer, laptop or phone adapter via the USB port. There is a hook on the bulb, convenient for you to hang it up anywhere. Low power consumption, energy-saving and long service life. Compact and lightweight, easy to store away and carry around. You can switch the lighting color between cool white, warm white and nature white via the button. Suitable for home use, or for outdoor camping hiking, etc. Specification: Condition: 100% Brand New Material: PS Input Voltage: 5V Power: 6W, 10W(Optional) Luminous Flux: 480LM(6W), 780LM(10W) Beam Angle: 120°        Color Temperature: 6500K(Cool White), 2500-3200K(Warm White), 3500-5000K(Nature White) Service Life: 50,000h Interface: USB Modes: Cool white, Warm white, Nature White(You can switch the mode via the button) Wire Length: Approx. 2m / 6.6ft Bulb Size(L * Dia): Approx. 11 * 6cm / 4.3 * 2.4in Weight: Approx. 113g Packing List: 1 * Bulb Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-Minnanxin