Coming up with ways to make you safer on the road, when using Serfas lights, is a top priority. NEW for 2016, our "BLAST" Audible Warning System emits a loud 85 Decibel signal when your light battery gets under 10 minute runtime in that specific mode.
How It Works
- When the battery reaches 10 minutes of runtime, in its current mode, the light will emit a long beep followed immediately by a short beep. Sound will continue every minute.
- When the power button is pressed it will put the light in the next longest running mode & it will restart the battery low alert until 10 minutes of runtime in the mode is reached. Repeat as necessary. Example: Going from highest mode to lowest mode at first beep could extend runtime up to 5 times.*
- Light will emit beep sound repeatedly when last minute of runtime in the current mode is reached.
- While charging the light the power button will blink blue. When full charge is achieved light will beep to notify charging cycle is complete.
- Light emits a beep when power button is pushed & light goes from mode to mode.
Blast audible warning system alerts rider of low battery. Long straps that will fit almost any post, handlebar or mounting application on a bike.
» BIG POWER!
Our brightest and most powerful light to date!!!
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Enjoy a small compact headlight with an incredibly long run time.
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Our most compact headlight over 1000 lumens comes equipped with our smallest external battery pack ever.
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Our highest powered self-contained USB rechargeable light ever!!!
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High powered USB rechargeable, and yet a tremendous value!!!
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USB Rechargeable at a great price!!!
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Looking for a light that is at home on the mountain bike trail as well as the commute home? Look not further than our USL-505. It's lightweight, powerful, and great run times.
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Enjoy an incredibly compact light that's ready to ride at a moment's notice.
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