AMICI DI BICI

Navigation: Basic, breadcrumb-style with no basemap
Training data: Basic speed, distance, time, elevation, heart rate and power data field, mountain bike metrics and ClimbPro
Connectivity: USB, ANT+, Bluetooth
Compatibility: ANT+, Garmin Varia, Connect IQ
Size: 40×62×17mm
Screen: 27×36mm, black and white

Navigation: Excellent, thanks to trifold GPS, GLONASS and Galileo satellite input, this Garmin is adept at exploring; it can store 100 routes
Training data: Speed, distance, time, ClimbPro, heart rate, power, but not advanced metrics such as left-right balance or training load
Connectivity: USB-C, ANT+, Bluetooth
Compatibility: ANT+, Garmin Varia, smart trainer and power meter
Size: 106.1x 55.7×20.6mm
Screen: 3in, 240×400 pixels colour and touchscreen

Navigation: Good, aimed primarily at following courses created in advance, with excellent turn-by-turn instructions and hazard warnings. Non-touchscreen means browsing maps is mostly a waste of time
Training data: Speed, altitude, power, heart rate, cadence, calories, gear selection (for electronic drivetrains), distance, time, temperature, navigation, performance monitoring and more
Connectivity: USB, Bluetooth, BLE, WiFi
Compatibility: ANT+ and ANT+ shifting, power meter and bike trainer, Shimano Di2, Vector power meter, Garmin Varia and VIRB
Size: 85×51×16mm (20mm total including protruding mount)
Screen: 38×51mm (2.6in diagonal), 246×322 pixel colour screen (non-touchscreen)

Navigation: Multi-band GNSS technology is claimed to improve navigation
Training data: Speed, altitude, power, heart rate, cadence, calories, gear selection (for electronic drivetrains), distance, time, temperature, performance monitoring
Connectivity: USB-C, Bluetooth, ANT+, WiFi
Compatibility: ANT+ shifting, power meter and smart trainer, heart rate monitor, Shimano Di2, Vector power meter, Garmin Varia and VIRB
Size: 57.8×85.1×19.6 mm
Screen: 2.6in (66 mm) diagonal, 246×322 pixels, colour non-touchscreen

Navigation: Good, maps and navigation features are easy to understand and its relatively simple to programme routes. On-device route calculation isnt great, though
Training data: Speed, altitude, power, heart rate, cadence, calories, gear selection (for electronic drivetrains), distance, time, temperature, navigation, performance monitoring and more
Connectivity: USB, Bluetooth, BLE, WiFi
Compatibility: ANT+ and ANT+ shifting, power meter and bike trainer, Shimano Di2, Vector power meter, Garmin Varia and VIRB
Size: 48×74.5mm
Screen: 50x82mm, 246×322 pixels, colour touchscreen

Navigation: Multi-band GNSS technology is said to enhance navigation
Training data: Speed, altitude, power, heart rate, cadence, calories, gear selection (for electronic drivetrains), distance, time, temperature, Adaptive Coaching, Power Guide, ClimbPro 2.0
Connectivity: USB-C, Bluetooth, ANT+, WiFi
Compatibility: ANT+ shifting, power meter and smart trainer, heart rate monitor, Shimano Di2, Vector power meter, Garmin Varia and VIRB
Size: 57.8×85.1×19.6mm
Screen: 2.6in (66mm) diagonal, 246×322 pixels, colour touchscreen

Navigation: Even clearer than the 830, using a larger screen with the same updated processor for quicker route recalculation
Training data: A bewildering number of training metrics that can be customised to your hearts content
Connectivity: ANT+, Bluetooth, WiFi, USB
Compatibility: ANT+, Shimano Di2, SRAM eTap, Campagnolo EPS, Garmin Varia
Size: 59x114x19mm
Screen: 3.5in/89mm colour touchscreen, 282×470 pixels

Navigation: Every bit as good as the 1030 Plus with a faster processor for quicker route recalculation
Training data: A bewildering number of training metrics that can be customised to your hearts content
Connectivity: ANT+, Bluetooth, WiFi, USB-C
Compatibility: ANT+, Shimano Di2, SRAM eTap, Campagnolo EPS, Garmin Varia
Size: 59x118x20mm
Screen: 3.5in/89mm colour touchscreen, 282×470 pixels