Here's what other sites are saying:
Be seen and be safe with the Helmet Marker! L.E.D. flash or glow illumination.Flexible lightweight design, two-sided illumination.Rugged designReflective material even when turned off.150 hour battery life100,000 hour L.E.D. life.Flash or glow modes.Visible over one mile, in the dark.Easy-to-replace long life batteries. (CR2032-3V batteries included).Perfect alternative to chemical lightsticks.Hook and Loop attachment
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