Nichia led lamp: use the ultra-brightness japanese-made nichia led With condenser lens: to see objectives more shapely and clearly Nature white: viewing objects in nature color to avoid olor distortion Cri is above 80%, similar as the sun Constant brightness: supported by charge pump & voltage regulator Low power consumption Easy to use: pen style with clip in classical outlook Application hand held tools for everyday use when lighting in darkness, searching, traveling and exploring