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 : Professional installation is recommended. Product name: Lamp board Size: About 4.5x2x1.5cm/1.77x0.79x0.59inches(L*W*H) Color specifications: two-color touch dimming (warm white, white) Charging adapter: USB-5VDC Power by: 550mAh 1W battery(included) Colour:As shown :Plastic + Metal Package Contents: 1 x Lamp board 1 x USB cable Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.