Android wearOS is smooth. You can install Apps from PlayStore directly on watch through wifi. It comes with 1 GB RAM and 8 Gigs of memory so you can download or stream music on the go through Google Play Music or Spotify. AOD(always on display) works great and helps in saving battery. You can use Google fit or strava or mapmywalk+ to track physical activity. Touch screen responsiveness is great. Google maps and Google Translate can be downloaded on watch. Battery life is 1 day with most features ON but you get 4 options also:
Daily 1 day
Extended 2 to 3 days
Custom as per requirement
Time only 1 week