Know More About Our Product 1.The LED light and loupe on the handband is detachable, you can take down either part for different use. 2. Pls adjust the working distance between you and the observed object, usually 280mm-420mm is the best view distance. 3.The loupe can be used with glasses for myopic person. Maginification:3.5x Working distance:280-420 mm Field of View:60 mm CARESHINE Headband Loupe with Led Light for Fine Observing CARESHINE headband light adopt the newest optical coating technology which reduces reflection and improves image clarity.Unique LED with 65000lux homogeneous gives true color rendering. The 5W LED headlight, provides cool, bright, even and concentrated light. The brightness of light can be adjusted according to your need. The spot size can be adjusted from 1 to 9 mm at 420 mm working distance for a optimal field of view. The CARESHINE light is perfect for long time concentrating work. LED Light Power: 5W Light Intensity :65000lux Lifetime of led :20000h Spot size:1-9mm Charging time :4h Working time : ≥6h Input : AC100-240V/50-60Hz Brightness :Ajustable Our Customer Always Usd For