4 straps
Straps by lug width
Measure between the lugs, where the strap goes in. Then pick your number.
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Super-O Boyer 20mm Stainless Steel Bracelet for Seiko SSC813 SSC815 SSC81716 mm Steel€122.90 -
Super-O Boyer Watch Band for Seiko Prospex Speedtimer SSC813 SSC815 SSC817, Stainless SteelBrushed, V Diver Clasp
16 mm Steel€101.90 -
StrapXPro - SX2B Rubber Strap for New Seiko 5 Sports 38mm SRPK29 Series, White16 mm Rubber€59.90 -
StrapXPro - SX2B Rubber Strap for New Seiko 5 Sports 40mm SRPE Series, White16 mm Rubber€59.90