Unfortunately, music playback does not work properly. Spotify is installed on the watch as a music player. The earphones are connected, and after 5-10 minutes during activity, the watch disconnects the Bluetooth connection.
But there was such a thing that the clock froze. The music stuttered, but the screen was dark. It only got better if I turned off the headphones, and then, with great difficulty, I was able to restart the watch. But the clock was also stuck in this case.
After when it recovered, and I wanted to select a music album from the watch while running, it froze again. I turned off the headphones. Then, with great difficulty, the watch came back, but suddenly it indicated that it was on the route again (I didn't even turn back). It turned out that while the watch froze, it did not record the activity either, the GPS signal was interrupted.
Could this be a software or memory error?
(The earphones work flawlessly with other devices.)