This product is suitable for video microscopes. If you need a higher working distance, the Ring Light illuminator Lamp may not meet the job requirements. With this Fill Light Lamp, you can improve the working brightness and better check the PCB. Product parameter 1. Power input voltage: AC, 100-265V, 50 or 60Hz 2. Output voltage and power: USB 5V 3Wx2 3.LED life: andgt 100000 hours 4. Color: the conventional white 6400K. 5. Brightness adjustment: 0-100 percent linear dimming 6.Metal hose length:400mm 7.Power cord length:1.8m 8.Clamp size:MAX 0-60mm Package included: 2x Adjustable Side Light 1x Power line 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.