Recieved my 38mm sport on Friday as I was leaving town for a conference. So far I love it! I can leave my phone in my purse but still see and reply to messages. I can either reply with a voice message (and wont do this in a conference) or a choice of pre-set replys. I really like that I can see who is calling and either step out of a meeting or ignore without much notice. I have notifications, like Facebook posts, Snap Chats sent to watch and I can only see that I have one. Not sure if there is a way to look at them or just the notice that I received one? I do like the I can read, dismiss or delete an email. Lots to learn and haven't had very much time! I did noticed yesterday that after a full charge on my iPhone 6 plus and watch that after a 15.5 hours on both, my phone had 63% battery left and the watch had 47% battery. BUT its a weekend and I'm not receiving as many emails and texts as I will during the week, so Monday will be a true test to how long the battery will hold up. So far very pleased and have had many people around me remark that its not only a nice looking watch, its pretty handy to not have phone out. AND I love the fitness app so far!