Wanted a cheap bike computer for a beginner biker and it's great! I compared the mileage here with my Strava and they were almost identical (give or take 0.1-2 miles). It's easy to set up (just DL their app) and automatically syncs to Strava once you're done with your ride (takes a minute or two to sync). You'll have to buy glow and heart rate sensors to read these features (but I think you can buy them and they can be used on other devices if you want to upgrade for the future.) Overall this is great for a small Aero -Bike computer that won't break the bank if you just want to know your speed, miles, time and numbers are going up!