4 stars: Works well with Vivowatch SP, only issue I've noticed that syncing aborts ongoing exercise/workout. A nice addition would be music controls.
3 stars: Does a good job tracking sleep/heartrate/PTT/step data. Also updates the firmware on the watch. My problems: * Cannot calculate calories for any stationary exercise, * Has Google Fit interface but does not export exercise data to Google Fit, * HealthAI took 7 days to inform me that i need 7 hours of sleep and 9k steps each day as per UK standards. You probably don't need to train an \
4 stars: love the battery life. Two suggestions, be able to scroll and read messages and during daylight press the side button so the backlight comes on. It's hard to see in the sun.
5 stars: Stopped working correctly after a year. Cannot log in nor sync data. Tried system reset-no help. Tried turning blue tooth off/on no help tried my other Samsung 9+. Uninstalled program/reinstalled no help. I think device is bad. How do I get it fixed ? Thank you. The upgrade fixed my issue. It works excellent now!
5 stars: The calibration is finally working after factory reset on the watch. I hope it transfers the sleep and heart rate data to google fit soon. Thank you for prompt responses.
4 stars: After calibration I was surprised that the PTT index is quite close to actual measurements with Omron device. This is great. I have a kind request - could you please provide function to download the data so I can plot my own graph and e....