The S.I.C.K. Kits UV light cures the S.I.C.K. Kits Resin in 30 seconds. It is compact and small enough to fit in a shirt pocket or glove compartment making the UV light always handy when you need it. This UV light runs on one rechargeable 3.7V battery so there is no additional power source needed. The S.I.C.K. Kits 30 second curing UV light comes with 1 rechargeable battery. Charger & extra batteries sold separately.