Garmin - Garmin Hydration Tracking ... lets you easily log your daily water intake and set reminders, so you can make sure you're getting all you need to stay hydrated. Learn more:
Garmin Enduro GPS Watch | REI Co-op
Garmin's Vivomove is an analog watch with activity tracking - The Verge
vívoactive 4/4S - Using the Hydration Tracking Widget