A:AnswerThe Apple Watch does not have a camera so FaceTime Video is not supported. However, you can use FaceTime Audio and make cellular calls when connected to your iPhone or by itself if you pay for the cellular option
A:AnswerUnless you want the LTE, I personally would wait until Apple Watch 4. You are not going to see a big difference otherwise. But if you just like the latest tech — then go for it. You get some cash back and have the latest digs.