https://www.amazon.com/Freestyle-10019172-Trainer-Digital-Japanese/dp/B00TYE8IK2/ref=sr_1_2?ie=UTF8&qid=1475516737&sr=8-2&keywords=Shark+Tide+Trainer

I love this watch! It's cheap and it tells you the tide. If I didn't want the tide function, I'd probably go with a casio and a velcro band. Otherwise, this is the lowest profile, cheapest tide watch on the market. Fairly durable too.