Specifications: Bulb: 365nm UV LED Material: aluminium alloy. Purple light wavelength: 365 NM. Purple light power: 3 W. Dimensions: 90 mm (length) x 15 mm (head) x 15 mm (tail). Tips: 1. Please remove the transparent plastic insulation film (if any) from the surface of the battery before installing the battery. 2. Polarity of the battery: the positive (+) end of the battery must be attached to the front (near the lamp) and the negative (-) end on the back of the flashlight. 3. This included battery is an alkaline battery and cannot be recharged. When the battery is empty, you need to prepare a battery that meets the specifications and replace the battery.
