Under Sounds and Haptics there are two options regarding "sound". One is a slider that can be slid completely to the left and appears to switch off sound when this is done. There is also a "Mute" switch. I've googled and some websites suggest that to switch off sound for notifications but KEEP haptic taps, you should slide the volume all the way to the left. Others suggest you should enable the Mute switch. The question is; is there a difference and if so what is it ? As a side note; I've noticed that with the volume slid all the way to the left MOST apps will cause the watch to do a silent Notification and haptic tap, BUT there is at least ONE app that still makes a ping. When Mute is enabled ALL Notifications are silent, however I have a suspicion (although not proven), that the one app that I previously mentioned makes a ping with volume OFF, then does not even tap. This all smacks of more bugs in 1.0.1.