Changed the breath of SRP637k1 “Baby-Tuna”。 It is a breath of a certain ok purchase that I exchanged with the windshield、 Because the spring rod was thin and seemed to come off, I didn't mind、Changed to Strap Code。 new:SUPER ENGINEER I Brushed Super Engineer Solid Link 316L Stainless Steel Bracelet , Straight Lug All of the images below、The right (bottom) side is made by Strap Code。Old certain Ok made returned to SKZ211 Atlas。 Buckle A certain ok = split pin and Strap Code = screwed Spring rod and can hole A certain ok made has a top corner Ⅱ type、StrapCore made has a rounded I type difference,、 Although it is subjective、After all price difference The texture and comfort of Strap Code are by far the best.。