If you want a watch and not a computer, the Citizen BN0000-04H is a no nonsense modern day classic at a reasonable cost if you shop around. A good sized watch for youngsters.
If you want something a little larger and flashier consider the Citizen BN0150-28E.
Both are Eco-drive and ISO-compliant and can be had for around $150.
PS: Not a dive watch, but my all time favorite watch: The ALBA (division of SEIKO) APBT211 available from Ebay for less than $100. Genuine titanium, military styled, and light as a feather with a black dial and big numbers. I have been wearing one for three years while loading bags on airplanes and it's still ticking and looking great. Not marketed directly in USA.