and the gallery:
1) IP67 waterproof rating. Water resistance is a requirement for a smartwatch. Can't go swimming with it, unlike the Pebble. Not sure why they couldn't have made it more waterproof since you can't open it up.
2) Optical heart rate sensor - nice, but is it reliable? We'll see.
3) Battery life was estimated at 2.5x better than LG. YMMV big time on that though.