1. F1 is a fluorescence detecting zoom flashlight. It can light far distance with spot light and cover large space with flood light.
2. Small size with metal pocket clip, easy to carry.
3. Powered by one 1.5V AA battery or NI-MH battery, which are easy to get.
4．Application fields include but not limited to:
Forensics & counterfeit verification.
Mineral & gemstone observation.
Checking for urine stains (e.g. pets) or other body fluids.
Searching for insects and reptiles.