After putting the series 4 on the charger last night (which were roundabout 5 hours on the charger) I traveled with it to work this morning (used 2 activities for walking), listened to spotify and got some train informations the watch was at 10% after 3,5 hours 😟
I checked the usage and it showed 5 hours 33 minutes usage since last full charge.
I hope this is getting better...
Maybe others with same experience ?
P.S. Sorry, just noted that 5.0.1 is the official release, so I updated now to 5.1 Beta 2.