Garmin offers more solar charging with new Edge 540 and Edge 840
Updated coaching and navigational features trickle down from the Edge 1040 to four mid-range models
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Introducing the Garmin Edge 540 & 840 Solar GPS Computers – Balfes Bikes Blog
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Garmin launches Edge 840 and Edge 540 cycle computers with multi-band GPS
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disappointment Garmin Edge 540 Review (840 Solar)