[iMore.com]

Whether you're calling, sending taps, or answering a message, the Apple Watch makes communication more convenient.
Need to quickly let someone know you're running late for a meeting, or place a quick call? The Apple Watch lets you stay in touch with those most important to you without reaching for your iPhone. You can give your favorite contacts one-button access, create a new message and dictate whatever it is you need to say, and even send your heartbeat to let someone know you're thinking about them.
However you want to use your Apple Watch to communicate, here's everything you need to know!

Full story from the iMore Blog...