Made In: China & USA Description: These 4 watt UV lights are a favorite among fluorescent gem, rock and mineral collectors for their portable size and excellent UV output. The reflector focuses the UV output to an intense, but smooth "spot" with a range of 10 meters or more for finding specimens up close or quite far away. The intensity of the beam is strong enough to cause fluorescence in materials that do not fluoresce very well under the normal UV A tubes used in standard UV lamp fixtures. Product Details: 365nm ultraviolet LED1050mA currentOne rechargeable lithium-ion batteryCompact, Portable, Easy storageWaterproof against accidental water immersionIncludes lanyard Battery and Charging InformationThis flashlight provides up to an hour of use on a charge. The flashlight set comes with ONE 2,500 - 3,000 mAh Rechargeable Li-ION battery and a simple-to-use Li-ION smart charger. It will take an hour or two to top off the battery after occasional use. If mostly discharged, the battery will need to charge for up to 12 hours. While the battery is charging the LED will be red. When the battery is fully charged, the LED turns a solid green and the battery should be removed from the charger. Overall Length: 120mmDiameter: 25mmWeight: 81g (without battery) Pieces: 1 Light with 1 rechargeable battery included, (Charger and additional battery optional)