Mark of the flashlight UltraFire
Model: WF-502B
3W Emitter
Ultraviolet (You can choose other issuers at the same price) Emitting Color: UV (395nm ~ 400nm)
Number of transmitters: 1
Compatibility Battery: 1 x 18650 or 2 x 3.0V/3.6V CR123A
Input voltage: 3.6V ~ 18V
Switch Location: on the back
Operating mode: ON / OFF
Operating Range: ~ 1 hour
Circuitry: 1000mA current output digitally regulated
Lens: Specially coated glass
Reflector: Aluminum Textured / OP Reflector
Carrying Strap: strap included
(the only difference between this model "WF-502B" in models WF-501B and is the exterior design of the housing has the same prestanciones)