Features: 3000K-5700K steplessly adjustable color temperature meets all your needs of different lighting effects for portrait or object shooting. Steplessly adjustable brightness and CRI95 high color rendering provide you with ultra-bright light and accurate color rendition. Built-in lithium battery(3.7V 4400mAh), can be recharged by the included USB cable, and very suitable for indoor and outdoor use. The LED light tube can be hold in your hand to achieve flexible lighting, or you can also install it to the light stand through bottom 1/4 inch screw hole for more stable usage. Net weight is about 320g and thickness is only 7mm, super lightweight and lightweight; comes with a carry bag for convenient storage and transport. Specifications: Color: Yellow/ Black(optional) Color Temperature: 3000K-5700K CRI: 95 Battery: built-in 3.7V 4400mAh lithium battery Input Voltage: USB DC 5V Item Size: 55.5 * 5 * 2.5cm/ 21.9 * 2 * 1in Item Weight: 320g/ 11.3oz Package List: 1 * Light Tube 1 * USB Cable 1 * Carry Bag