Description: 1. Suitable for: Suitable for 3D printing DIY models. 2. Adjustable brightness: Touch the brightness adjustment, long press the charging port to adjust the light brightness. 3. Battery powered: 550mAh 1W rechargeable battery (built-in), with USB cable, easy to charge. 4.2 colors: Touch control light board. 2 colors: warm white and pure white. 5. Installation method: Professional installation is recommended. Specification: Product name: Lamp board color: White Material: PCB Size: About 4.5*2*1.5cm/1.77*0.79*0.59inches（L*W*H） Color specifications: two-color touch dimming (warm white, white) Charging adapter: USB-5VDC Power by: 550mAh 1W battery（included） The package includes: 1 piece * Lamp board 1 piece * USB cable