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This Super-O Boyer watch bracelet with a curved solid end pieces perfectly fit SEI Diver 6309-7040 & 6309-7049 models or other 22mm lug SEI diver or sport watch case with the same curvature as the above models. Super-O Boyer watch bracelet is a new breakthrough of our Super-O Boyer Collection. Same as Super-O Boyer, this Super-O Boyer composed of 3 flat and solid 316L stainless steel units plus highlighted 3D effect curved solid end pieces. This well-built replacement bracelet was assembled by screw-in adjustable details instead of flimsy pressure pins. This item includes one pair of FAT spring bar (Generic SEI Dia. 2.5mm spring bar) to ensure a more secure connection. Accompany with ratchet buckle clasp which is an ideal wetsuit watch band buckle. The ratchet theory extension mechanism is of great importance for both convenience and safety. This unique aftermarket watch bracelet tailor made for SEI Diver 6309-7040 & 6309-7049.

Item number: SS222017B016
Brand Name: Super-O Boyer
Lug width (mm): 22
Buckle size (mm): 20
Buckle Include: Yes
Buckle type / Buckle Finish: 316L Stainless Steel Button Control Diver Clasp, Wetsuit Ratchet Buckle, Brushed
Overall Length (mm): approx. 190
Thickness (mm): 3.4
Spring bar hole dia. (mm): 2.50
Design to fit : SEI Scuba Diver 6309-7040 / 6309-7049
Material: 316L Stainless Steel, all solid links include end links
Color / Finish: Brushed
Max. length (mm): approx. 190
Corresponding Min. length (mm): approx. 120
Net Weight (gram): approx. 106
Lug end style: Curved End
Adjustment type: 8 Screw fixed links & 0 micro holes on clasp

Lookbook demo watches: Vintage SEI Divers Turtle 6309-7040 Day/Date Watch

Remarks: Please Readme before purchase: Vintage SEI 6105 models production started in 1976. SEI 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.

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