GPS bike computer
Better than your phone for navigation: bigger battery, brighter screen, weather-sealed, ANT+ for radar and heart rate.
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A dedicated bike computer pays off the first time you ride past 4 hours, ride in pouring rain, or want to pair with rear radar and a heart rate strap. Garmin and Wahoo are the two real choices; Hammerhead Karoo is the dark horse with the best maps.
If you ride mostly in the city and never need turn-by-turn off route, your phone is fine. Pick a bike computer when navigation, training data, or radar/lights integration matters.
Where to buy
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Also worth a look
Hammerhead Karoo (3rd gen)
Best maps in the industry, Android OS, owned by SRAM — feels like a phone but built for cycling.
See the full specsGarmin Edge 540
Reference bike computer: radar integration, ClimbPro, structured training, 26-hour battery.
iGPSport BSC100S
GPS, ANT+, 40-hour battery, basic navigation — the budget option that doesn't feel cheap.
Pro tips from the e-bike pros
- Buy ANT+ — it's the only way to pair with radar, power meters, and most heart rate straps.
- Komoot and RideWithGPS integrate with most modern head units and beat the stock route planners.
- Battery anxiety on long rides: bring a USB-C cable and a small power bank. All three majors charge on the move.
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