[Delta 21]

Seiko 7S26-0029 Scuba Diver's.

Until they put all the crap on an iPhone into a wrist watch,{...calling Dick Tracy...} this one is good enough. ('Course I've been waiting around for flying cars too.)

[Yardstick]

It’s a nice looking watch and apparently the 7S26 movement is considered to be a real workhorse. Here are some variations:

http://forums.watchuseek.com/f281/collectors-guide-all-seiko-7s26-0020-9-diver-variants-skx007-its-siblings-191450.html