Dome Shape Double Fold Butterfly Deployant Clasp / Buckle with push button on Super Engineer II watch bracelet is design for SEIKO Diver 6309-7040 model or other 22mm lug Seiko diver or sport watch case with the same curvature as the above models. Super Engineer II is composed by 5 chamfer edge well-made solid 316L stainless steel units. Screw-in adjustable details instead of pressure pins. This item includes one pair of FAT spring bar (eg. generic Seiko Dia. 2.5mm spring bar) to ensure a more secure connection. This unique aftermarket watch bracelet tailor made for SEIKO Diver 6309-7040.
Item number : SSD222016B028
Brand Name : Super Engineer II
Lug width : 22mm
Buckle size : 20mm
Buckle Include : Yes
Buckle type / Finish : Dome Shape 316L stainless steel Brushed Lengthened Deployant Clasp
Overall Length : 190mm
Thickness : 4.6mm
Spring bar hole dia. : 2.5mm (included)
Design to fit : Seiko Diver 6309-7040 & 6309-7049 replacement watch band
Material : 316L Stainless Steel, all solid links include end links
Color / Finish : Brushed
All Available Max. length : 195mm
Corresponding Min. length : 98mm
Net Weight : 124g
Lug end style : Curved End
Adjustment type : Screw type adjustment + 8 micro hole type adjustment
Remarks : (ACC-DE20-016B)
Please Readme before purchase: Vintage Seiko 6105 models production started in 1976. Seiko 6309-7040 and 6309-7049 both are successors of 6105. The 6309 watch cases have been produced in two (or more) different styles. The case had been slightly changed from big cushion cases into later stage slimmed down version. Therefore, each style may have very little different from each other, such as spring-bar-tip-hole diameter and the hole-to-case-edge distance. Our 6309 replacement bracelets have been tested can fit in a few 6309 models during production period however it may not fit all other 6309 models.
Suggestion: Our 6039 replacement bracelet comes with a pair of Dia. 2.5mm Fat spring bars. If your 6309 cannot fit in our replacement band, please try to change spring bars with diameter less than 2.5mm, eg. 2.0mm or 1.78mm (your original spring bars). Changing spring bars can help to grab spring-bar-tip-hole more easily for a successful installation. Should you have any questions please feel free to contact us.