Garmin Edge 20
Physical & performance 
Dimensions4.0 x 4.2 x 1.7 cm
Display size2.3 x 2.3 cm
Display resolution128 x 160 pixels
Color displayNo
Weight0.9 oz (25 g)
BatteryRechargeable lithium-ion
Battery lifeUp to 8 hours
Water ratingIPX7
GPS enabledYes
Maps & memory 
Maps and routesNo
Ability to add mapsNo
Accepts data cardsNo
ANT+ cadence/speedNo
ANT+ heart rate strapNo
ANT+ power meterNo
ANT+ Trainer Control (FE-C)No
Bluetooth smart heart rate strapNo
Bluetooth smart cadence / speedNo
Bluetooth smart power meterNo
Power meter compatibleNo
Recording intervalN/A
Virtual partnerYes (within a course)
Biometric altimeterGPS
Electronic gear shift displayNo
Live trackingNo
Strava live segmentsNo
Temperature displayNo
Display GPS & sensor dataYes
Shock resistantYes
Wireless connectionNo
Smart notificationsNo
Automatic syncNo
OtherBluetooth®: no
Ephemeris satellite predictions: no (however, ephemeris data is supported from a computer and Garmin Connect™)
Elevation: yes
Beeper: yes
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