The Mio Fuse is a very interesting Activity Tracker with potential for improvement. Positive I would like to highlight: + Connect to Mio app works without problems + The connection with my Fitnessapp Run.GPS is also easily, only the data of the step counter (= Speed or Pace) do not appear in Run.GPS, this is not likely at the Fuse million but at Run.GPS + Easy to use (but only in a horizontal position!) + Comfortable to wear + The accuracy of the heart rate monitor is in very closely with the display of my Zephyr and the graphics displayed on the fitness equipment in the studio match! Only now and then increases / decreases the display anywhere - on average it fits however. + The accuracy of the pedometer (or distance) is true when running amazingly accurate at 10km I had a difference of only about 30-40m (measured on the treadmill). When walking, the difference is a much larger, but that's not me personally so important. + After 1 week of intensive use, the battery is still around. 40% displayed (in the Run.GPS app) Now for the negatives: - The Mio app is really getting used to, synchronized with each call and is absolutely confusing (I had a short time the Runtastic Orbit and since the app was at least nice and clear) - No upload the training data and no analysis options on the app and Mio - As the clock display is always switched off again to save battery is wearing a clock needed and you have to 2 wrists such parts then what is already uncomfortable. Conclusion: the Fuse million can I in conjunction with a compatible app recommend only the lack of permanent display of the time I feel personally and from the additional carrying a clock for me is the killer for Mio Fuse => therefore back to Amazon.