Looks cool but battery life is a joke

Went on a ride around the bay, attached this to my helmet and rode around for 3 hours. The darned thing wasn't even blinking once I got back. Gave it the benefit of the doubt, and charged it fully and then took anther few hour trip. Again, it was off and wouldn't turn back on. Yep, dead battery. Since it was on my helmet that never comes off until I get home, it could mean life and death.

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