There's about a dozen of screens you can toggle between (time, date, next alarm, number of steps, distance and so on). Short press of the only button toggles between them, long press does some action (example: cancel next alarm).

However I don't have anything on that screen by default to extend battery life closer to a month.

Two more features I highly appreciate:

- I don't think I could go back to an alarm on my phone. Smart wakeup really works wonderfully.

- Even when battery's at 0%, basic functionality (telling time, counting steps) still works for like a week or two.