The TomTom Spark does nothing revolutionary, but bringing music to your wrist is liberating. Yes it’s limited to old-school MP3s and not Spotify, but the feeling of smartphone freedom for music-loving runners is tangible. We also loved being able to hook up Strava and RunKeeper to our workouts, and it’s easily the most accurate heart rate system we’ve tested. The slightly underwhelming ecosystem does is a slight downside, but the TomTom Spark but still comes heartily recommended.
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