The new Edge 540 and 840 carry over the user interface from the Edge 1040 and supply a more pleasant user experience
Garmin Edge® 540 Solar, Bike Computer
Garmin's new Edge 840 and 540 bike computers inherit Solar technology and USB-C charging, with improved mapping - BikeRadar
What's the difference between the Garmin Edge 1040, 840 and 540 cycling computers? - BikeRadar
Garmin Edge 840 & 540 Released - Equipment - TrainerRoad
New: Garmin Edge 540 and 840; now with Solar! - Winter Park Cycles
Garmin announces the Edge 540 & 840 series of cycling computers
Garmin Edge® 540 Solar, Bike Computer
Garmin Edge 1040 (with Solar) In-Depth Review
What's the difference between the Garmin Edge 1040, 840 and 540 cycling computers? - BikeRadar
Garmin Edge 540 and 840 Series Update Features and Introduces, garmin edge 540