Last night I forgot my phone in my living room and I was to tired to go get it. I changed my watches and went to sleep, I woke up this morning and changed my watches again. I do like using my Apple Watch to count my stand times (just as a side note) as I had no desire to actually get out of bed but need to go to the potty. I got back to bed and some time later my wrist started vibrating, it scared the heck out of me. I guess when I have my watch on my alarm clock goes off with a buzz when my watch is on that was new to me.