I Just received my watch yesterday. I've encountered a few issues so far. I'm not sure if it's first day setup stuff, software limitations or possibly a buggy unit. So far I can feel the pulse for notifications. It's certainly softer than my pebble, but in the car it is more difficult to notice them. I charged it throughout the night and it was at 100% I had it sync some music while on the charger and when I left the house I noticed I was down to 90%. It's 90 minutes later and I've used it sporadically since and I'm at 79%. Not sure if that was a fluke. I ended up screaming "hey Siri" like a crazy person in the car to no avail. I was on the watch face and had just turned my wrist. I thought it was useless if there was any background noise, but I noticed upon getting to work that holding the crown only activated Siri once and then that stopped. I did a restart and Siri is working again. The call volume worked fine in my house. Certainly softer than my phone on speaker but many here could not hear in a quiet environment, so I'm better off than them.