Not an essential piece of kit
I had the LG G Watch R for about 9 months.
It was a decent piece of kit, but the fact the charge only lasted 36 hours and the bluetooth disconnecting all the time essentially made it useless.
I did like the bright display, the instant notifications when they actually worked (handy in meetings) and the app to change the music remotely in Poweramp but that was it really.
I'm back to my Casio CFX-200 scientific calculator smartwatch from 1983 which is better looking, far more reliable and only needs a new battery every six years.
To me the smartwatch market is dead. I certainly wouldn't consider another one. I know several people with the Apple watch and they just use it to show off and look like twats.