I ordered a 42mm SG Sport and 42mm Sport WB on 2 May. My girlfriend's Sport arrived last week so I had the pleasure of un-boxing and using it for a few days, so here are some initial impressions - coming from a Pebble Steel user. The un-boxing experience and device hardware/design is typical Apple - first-class. The white strap is incredibly soft and comfortable. I actually like the white strap for casual wear but it felt a little conspicuous for work. Pairing was simple and set-up was painless, if a little slow, inc. updating the software to 1.01. The myriad of options with the Apple Watch app on the phone would I guess be confusing to some users and I'm not sure I worked through them all. Notifications took a bit of setting up. With Pebble I'm used to receiving notifications on phone and watch. With Apple Watch it took me a while to realise the notifications are 'intelligent' in that they don’t appear on watch if you are using your phone, or if you're not wearing the watch (which makes sense) Wrist raise - worked most of the time. Definitely wouldn’t think of turning it off Haptic feedback - I soon became immune to notification taps and had to activate prominent haptic feedback in order not to miss alerts Battery life was better than expected - I'd regularly finish the day with more 50%+ left. On Saturday I ended the day with 70% battery left! User Interface - the UI on the watch takes a bit of getting used to - unusual for an Apple device. It’s hard to quantify why, it’s just not immediately intuitive - a juxtaposition of button presses, hard-presses, screen swipes and crown scrolls. Heart-rate monitor - I have to say that having read the 'furore' re- heart-rate tracking on 1.01 I actually have not really noticed a problem. Even post 1.01 my watch mostly appears to register my heart-rate every 10 mins, not missing many. Fitness Tracking - the rings did get me motivated but I wish Apple would provide more clarity/transparency in relation to certain aspects, such as what qualifies as Exercise, difference and qualification of Active vs Resting calories etc. There are other threads covering this with some people making reasoned assumptions but Apple should come straight out and state clearly the design intention and rationale. Calls - felt a bit star-trekky using watch to answer calls on the wrist. Surprisingly clear but my arm ached after a couple of minutes of holding it up! Messages - got used to using Siri to dicating and replying to texts - handy in the car - though still needs a screen press or two to reply and confirm send. New emoticons are cute and can be sent to iPhone users too. Third-party apps - slow to load and pretty unimpressive so far. Probably have to wait for developers to get access to full SDK. Used Hue app to control my lights but thats about it. Overall, as has already been pointed out, there’s no killer stand-out feature - no-one needs one - but I wanted one and enjoyed using and wearing it. I appreciated the convenience and fun-factor and I definitely used/accessed by phone less. The 'issues' with health/heart tracking I'm sure will be overcome - or at least Apple will provide some clarity - and I'm definitely looking forward to the software/apps evolving and maturing to add to the overall experience. Unfortunately, I've had to give the watch back to my girlfriend while I await my Space Grey Sport....currently 17 -23 June window. My Pebble Steel already feels like a relic from a bygone age! ...and I'm also wondering whether I should have gone for the SS!!