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Reverse polarity protection to protect improper battery insertion. One-switch control ensures easy and fast operation. Low-voltage warning reminds when battery replacement needed. Made of quality aluminum and silicone - tough and durable. Operating Instruction ① On/off Press and hold the switch for 0.5 seconds to turn on/off the light.
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Solution: Clean the contact points with a cotton swab soaked in rubbing alcohol. If the above methods don't work, please contact your authorized distributor. Included HM23 headlamp, Alkaline AA battery, Hollow headband, Silicone holder, Spare O-ring, Warranty card, User manual Warning The headlamp is a high-intensity lighting device capable of causing eye damage to the user or others.
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