Powerful LED Diving Headlamp
Material:ABS Plastic and stainless steal head, silicone head strap. Item weight:138g. 
IP68 waterproof, underwater more than 20 meters
LED source: XM-L T6 LED cold white light; Max ouput 10W
Maximum brightness: 500 lumens
Rotary magnetic switch 
3 modes of high light, low light, strobe light
Battery type: 18650 or 3X AAA batteries
Lighting time: 3-6 Hrs