1. This flashlight uses Fluorescer Detector LED. When you use it shine something that hasn't fluorescer, the light is white. When use it shine that has fluorescer, the light is blue. And it has more fluorescer, the color is bluer. If the flashlight has this function. The flashlight is not only the flashlight that use to light, it good for our life and health.
2. We know fluorescer is bad for me, especially the baby. Now, many merchants add fluorescer and Oxidant with food and clothes to keep food fresh and clothes colorful. You can check them by using this flashlight. You can use it to check clothes, paper, and baby diapers. When you buy fruit and skin care. You also can use it to check.
3. You can use it to check the authenticity of a bill. You the bill is real, the light is blue.
4.Suitable use 1 pc of AAA or 10440 battery, easy purchase , replace , flashlight with cute size, light weight, with key chain clip , portable carry.