3 Lighting Modes &90 Rotating Diving Headlights with 3 Switch Modes: High-Medium Strobe. Strobe mode can be used in case of danger again during diving. In addition, it also supports rotating up and down 90 degrees. Power This diving headlamp is powered by 1*18650 lithium battery with battery charger. Note: The cover needs to be tightened when installing the battery, otherwise it will not brighten. IPX8 waterproof and waterproof design, can be used normally under water 50-100m. Suitable for scuba diving, wreck diving, underwater fishing, salvage and underwater photography. In addition, it can be used for camping, swimming, hiking, trekking, hunting, fishing, etc. High quality durable tempered glass lens sand 6061 aluminum alloy shell is suitable for extreme conditions. Seawater corrosion, scratch, drop and durable. The comfortably adjustable headband fits most headset sizes.