When words can’t describe your epic ride, numbers can. Blackburn’s Atom SL 4.0 offers comprehensive ride data in a wireless package; know your speed, distance and time, all the time. The rear-wheel speed sensor works whether you’re outdoors or inside on the trainer. Perfect for mounting on your handlebar or stem, the Atom sports a huge 18mm-tall display that's clearly legible even during the hardest of efforts.
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