Hi. 

Wifes wristwatch is on the verge of dying and she has aked about whether she should consider a smart watch as she wears an UP24 band on her other hand which she doesn't really like: 

Priorities are: 

1) Square face (Not a deal breaker)
2) Reasonable HR monitoring
3) Battery Life
4) Size (She is relatively petite).
5) Not an Apple anything.

We dont' mind waiting a little if something is coming which is particularly awesome.

Budget ideally under $500.