Rafting/Kayaking Watches

Ahoy! I am in the market for a good rafting/kayaking watch that will track how many river miles I have travelled and my speed to help me better track where I am on the river and roughly how long it will take me to get to my next campsite.

Key Features I am looking for:
Durability
Long battery life
Ease of use (I don't want to have to read a novel to figure it out)

Any recommendations out there?

Cheers and happy travels,

Mateo