USB Rechargeable Green Purple Led Headlamp

Product information:
Name: Outdoor red light/green light/UV395nm headlight 4-speed LED fixed focus headlight
Colour: Black
Light color: red light/White light/green light/UV395nm purple light (4 colors optional)
Lamp beads: LED
Voltage: 3.7v
Use battery: 2*18650 lithium battery (not included)
Red headlight lighting mode: 4 lighting modes (white light strong light / red light / white light + red light always bright / white light + red light flashing)
Green headlight lighting mode: 4 lighting modes (white light strong light / green light / white light + green light always bright / white light + green light flashing)
Purple headlight lighting mode: 4 lighting modes (white light strong light / purple light / white light + purple light always bright / white light + purple light flashing)
Switch type: push button switch
Whether to adjust the focus: no focus
Maximum range: 200-500 meters
Waterproof rating: IPx4