Battery life can be pretty variable. Running step tracking, heart rate every five minutes, and the xDrip watchface, I only get about a week and a half.

It's so nice to not have to check my phone all the time to know where my blood sugar is at. I'm looking forward to the upcoming rework of how xDrip handles Pebble communication so that I can start playing with my own watch faces. Theirs does its job but isn't stylish by any means.