Solar charging and adaptive coaching: Garmin unveils updated 540 and 840 Edge cycling computers
What's the difference between the Garmin Edge 1040, 840 and 540 cycling computers? - BikeRadar
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Garmin announces the Edge 540 & 840 series of cycling computers
Garmin offers more solar charging with new Edge 540 and Edge 840 Series GPS cycling computers
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Garmin Edge 840 & 540 Released - Equipment - TrainerRoad
Garmin launches two GPS bike computers Edge 2 and Edge 540
New Features Garmin Edge 540 & 840, New Solar Features