The modern 42mm case features a brushed finish highlighted by polished chamfers and the downward tapering lugs create a comfortable fit on most wrists. Long stem pushers make it easy for the wearer to operate the chronograph function.

A double-domed sapphire crystal protects against scratches and wear. The broad arrow hand set and contrasting sub-dials allow for easy legibility. A date window cutout is conveniently placed at the 4:30 position. 

The Seiko VK63 Mechaquartz movement powers the Chrono Diver with a smooth (1/5s) chronograph hand and instant mechanical reset. Track up to 60 minutes of elapsed time using the left sub-dial. The right sub-dial is the 24 hour indicator and the running second is in the bottom sub-dial.