You must pay for accuracy and quality, thus I don't see the cost as a drawback. The device is generally as content as an elephant. The battery charge is displayed exclusively on one dial, despite the wishes to enlarge the sparse collection of dials. pros: it's practical. I found the wristband I was seeking for, complete with GPS and a continuous measurement of the emergency situation. For the first time ever, I spent a lot of time looking for satellites. dimensions, unnoticeable on the hand, rapidly learned. I heard complaints concerning the sensor's high sensitivity, which was not recognized. Battery is a drawback. sufficient for 4 days (included HR measurement, notifications plus a couple of runs). That would be perfect if it lasted a full week. a non-smart alarm.