close search

Brett Kastin

Brett Kastin

REVIEW: Seiko Prospex Automatic SRP637 "Baby Tuna"

Brett Kastin

The Seiko Prospex SRP637, commonly referred to as a “Baby Tuna,” was added to the line-up of Seiko’s Prospex series in 2015. One of the Baby Tuna’s most recognizable features is its 60-minute uni-directional rotating dive bezel with a stainless steel shroud. The stainless steel case and shroud measure 47.5 mm wide x 13.5 mm thick x 50 mm in length, with a weight of 202.5 grams (including the bracelet) but wears considerably smaller than the numbers might indicate. The locking crown (7 mm in diameter) is located at the 4 o ‘clock position, eliminating interference with the wrist. The Baby Tuna comes with a 22 mm/20 mm stainless steel bracelet which uses a pin and collar system for sizing and has micro adjustments on the clasp. There is also a folding expansion for the clasp in order to add

Read More »