Yes that looks like great battery life. My battery will last the day during the weekends no issues but during the week when I"m getting tons of calendar notifications for work It will usually be down to under 20% at around 9:30 pm (getting up at 7 am). I usually try to charge it during lunch but if I forget It has to be put on the charger before I go to bed. My husband's 42 MM lasts all day and then some - no issues at all. I use it for calendar notifications to keep me on track and to answer texts. I find it's normal for me to lose around 3% per 10 min interval. This has stayed pretty consistent except when a new version comes out and sometime it has to be rebooted because it drains faster.
Cheers,
Bobbie