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Seiko Lug Width & Strap Size

What size watch strap does my Seiko use?

Finding the correct info for your next Seiko watch can be a challenge with so many different resources around the web. What we’ve done at StrapsCo is created the best reference table for Seiko watches. Here you’ll be able to look up your Seiko’s lug width and case size in one convenient place. We’ll tell you accurately the exact strap size you need for your Seiko. Whether it be for Grand Seiko, Seiko 5, Seiko Presage, Seiko Prospex, or one of the many other Seikos on the market, we have the exact specifications of your watch. Read the spec sheet below to find the diameter of your watch case and even explore further into our Seiko lug width & strap size guides. If you’re looking for replacement watch bands for Seiko, we have it all below. Simply look up your Seiko watch by the reference number or model number and click through to check out the guide. If you click on the strap size you’ll be taken to the best selection of replacement Seiko bands in the size you need. Interested in Seiko nicknames? Keep on reading and you may discover a few new ones.

CollectionReference/Model NumberLug Width/Strap SizeCase Size
FlightMasterSNA411 “Flighty”21mm42mm
Grand SeikoSBGA00120mm41mm
Grand SeikoSBGA011 “Snowflake”20mm41mm
Grand SeikoSBGA20120mm41mm
Grand SeikoSBGA211 “Snowflake”20mm41mm
Grand SeikoSBGA28319mm40mm
Grand SeikoSBGA28520mm39mm
Grand SeikoSBGA38719mm40mm
Grand SeikoSBGH267G19mm39.5mm
Grand SeikoSBGJ201 “Mt. Iwate”19mm40mm
Grand SeikoSBGJ20319mm40mm
Grand SeikoSBGM22119mm39.5mm
Grand SeikoSBGN00319mm39mm
Grand SeikoSBGR05319mm37mm
Grand SeikoSBGR30520mm40.5mm
Grand SeikoSBGR31121mm42mm
Grand SeikoSBGV23819mm40mm
Grand SeikoSBGV24520mm40mm
Grand SeikoSBGW23119mm37.3mm
Grand SeikoSBGW25319mm38mm
King Seiko44-999019mm36mm
King Seiko4502-700118mm36mm
PresageCocktail Time SSA439J1 “Blue Acapulco”20mm40.5mm
PresageSARY05522mm41mm
PresageSPB03720mm40mm
PresageSPB07920mm44mm
PresageSSRPB41 “Cocktail Time Blue Moon Strap”20mm40.5mm
PresageSRPB41J1 “Cocktail”20mm40.5mm
PresageSRPB43 “Cocktail Time Skydiving”20mm40.5mm
PresageSRPB43J1 “Sky Diving”20mm40.5mm
PresageSRPC97J1 “Fuyugeshiki”20mm40.5mm
PresageSSA361J1 “Star Bar Starlight”20mm40.5mm
PresageSRPB4620mm40.5mm
Presage Blue EnamelSPB06920mm40mm
ProspexAlpinist SARB01720mm39mm
ProspexMarine Master SBDX01720mm44mm
ProspexSamurai SRPB0922mm43.8mm
ProspexSBBN015 Marine Master Professional22mm46mm
ProspexSBDC029 “Shogun”22mm44mm
ProspexSBDJ01922mm43.5mm
ProspexSBDX011 Marine Master “Emperor Tuna”22mm52mm
ProspexSea Diver SSC617P120mm43.5mm
ProspexSLA01719mm40mm
ProspexSNE435 PADI20mm43.5mm
ProspexSNE43720mm43.5mm
ProspexSNE441 Solar20mm43.5mm
ProspexSNE49320mm43.5mm
ProspexSolar SNE498 “Tuna”22mm47mm
ProspexSPB143 “62MAS”20mm40.5mm
ProspexSPB14720mm40.5mm
ProspexSPB15120mm42.7mm
ProspexSPB189J1 “Shogun”22mm43.5mm
ProspexSSC663P120mm42mm
ProspexTurtle SRPB1122mm45mm
ProspexSRPB53 “Samurai Blue Waffle”22mm44mm
ProspexSRPC91 “Turtle STO”22mm45mm
ProspexSRPD23 “Samurai STO Great White Shark”22mm43.8mm
ProspexSRPD27 “Black Monster”20mm42.4mm
ProspexSSA343J1 “Sky Diving”20mm40.5mm
ProspexSSC015P120mm43.5mm
ProspexSSC01720mm43mm
ProspexSSC01920mm43mm
ProspexSSC02120mm43.5mm
ProspexSSC03120mm43mm
ProspexSSC08121mm42mm
ProspexSSC081P121mm42mm
ProspexSSC673P122mm43.5mm
ProspexSSC70122mm43.5mm
ProspexSSC81320mm39mm
ProspexSBDC001 “SUMO”20mm45mm
ProspexSUN019 “Tuna”24mm47mm
ProspexSUN023 “Tuna”24mm48mm
ProspexSUN065 “PADI”24mm47.5mm
ProspexSZSC003 “Diver Scuba”21mm42mm
ProspexSRP777 “Turtle”22mm44.3mm
ProspexSBDY085 “Mini Turtle”20mm42mm
ProspexSRPC07 “Orange Samurai”20mm44mm
Prospex DriveSPB05120mm42mm
Prospex PadiSPB71J121mm42mm
RescraftSNKM9724mm43.5mm
RescraftSNKN0124mm43.5mm
RescraftSNKN3724mm43.5mm
Seiko 5SKN805, SNK807, SNK80918mm37mm
Seiko 5SNK35518mm37mm
Seiko 5SNK79318mm37mm
Seiko 5SNKK27 “Speed Racer”20mm38mm
Seiko 5SNKK8720mm38mm
Seiko 5SNKL1518mm38mm
Seiko 5SNKL2318mm38mm
Seiko 5SNKL4118mm37mm
Seiko 5SNKL4318mm37mm
Seiko 5SNLK2318mm38mm
Seiko 5SNX115 (7S26-0440)18mm37mm
Seiko 5SNX80919mm37mm
Seiko 5SNXJ89 “DateJust”20mm37mm
Seiko 5SNXF0519mm37mm
Seiko 5SNXS7319mm37mm
Seiko 5SNXS73K20mm37mm
Seiko 5SNXS7518mm37mm
Seiko 5SNXS7719mm37mm
Seiko 5SNXS77K19mm37mm
Seiko 5SNXS7919mm37mm
Seiko 5SNXS79K19mm37mm
Seiko 5SNXS79K119mm38mm
Seiko 5SNZF15 “Sea Urchin”22mm41mm
Seiko 5SNZF15J1 “Sea Urchin”21mm41mm
Seiko 5SNZF17 “Sea Urchin”22mm41mm
Seiko 5SNZF17J1 “Sea Urchin”22mm41mm
Seiko 5SNZF17K1 “Sea Urchin”22mm41mm
Seiko 5SNZH53 “Fifty Five Fathoms”22mm42mm
Seiko 5SNZH55 “Fifty Five Fathoms”22mm43mm
Seiko 5SNZH57 “Fifty Five Fathoms”22mm42mm
Seiko 5SRPE6120mm40mm
Seiko 5SRPC61 “Bottlecap”20mm45mm
Seiko 56309-7200 “Vintage”22mm42mm
Seiko 57009 “Vintage”20mm37mm
Seiko 5 SportsSARZ00520mm41mm
Seiko 5 SportsSNKE5718mm41mm
Seiko 5 SportsSNZG1322mm42mm
Seiko 5 SportsSNZG1522mm42mm
Seiko 5 SportsSNZG15J122mm42mm
Seiko 5 SportsSPRPD51K122mm42.5mm
Seiko 5 SportsSRPD5122mm42.5mm
Seiko 5 SportsSRPD7922mm42.5mm
Seiko SportsMatic Weekdater6619-801019mm37mm
Seiko SXKSKC00726mm42mm
World Time6117-640020mm41mm
700222mm42mm
2205-0760 “Lady Diver”16mm33mm
4006-700019mm40mm
6138-0011 “UFO”19mm44mm
6138-0011 “UFO”20mm44mm
6138-0030 “Kakume”18mm43mm
6138-0040 “Bullhead”20mm44mm
6138-3000 “Jumbo”19mm42mm
6138-7000 “Calculator”19mm44mm
6139-6002 “Pogue”19mm41mm
6309-704022mm45mm
6309-729022mm41mm
6309-729A22mm41mm
7548 “Vintage”22mm42mm
7A28-702920mm37mm
7T32-TC6019mm39mm
7T34-6A09 “Flightmaster”20mm40mm
SARB03320mm38mm
SARB03520mm38mm
SARB065 “Cocktail Time”20mm40mm
SBDY023, SRPC95J, SRPC95K “Turtle Nemo”22mm45mm
SGF20420mm40mm
SKA371 “BFK”20mm40mm
SKX00722mm42.5mm
SKX00922mm42.5mm
SKX009 “Pepsi Diver”20mm42mm
SKX01320mm37mm
SKX031 (7S26-0040) “Submariner”22mm39mm
SKX17322mm41mm
SKX779 “Black Monster”20mm42mm
SKX781, SKX781J, SKX781K “Orange Monster”20mm43mm
SKXA3522mm42mm
Skyliner 6102-800018mm37mm
SNA413 Flightmaster21mm42mm
SNAF09 Chronograph18mm42mm
SND219 (7T92-0CC0)19mm39mm
SND25320mm41mm
SNE039 Solar20mm37mm
SNE107 Solar20mm42mm
SNE109 Solar20mm42mm
SNE331 Solar22mm43mm
SNE49722mm47mm
SNJ025 “Arnie”22mm47.8mm
SNKE5120mm39mm
Spork20mm44mm
Sportura20mm44mm
SRP313 “Monster Dracula”20mm42mm
SRP315 “Orange Monster”20mm42mm
SRP483 “Baby Monster”22mm39mm
SRP499 “Stargate”22mm43mm
SRP583 “Black Ion Monster”20mm42mm
SRP637 “Baby Tuna”22mm46.5mm
SRP775 “Turtle”22mm45mm
SRP777 “Turtle”22mm45mm
SRPA21 “Turtle PADI”22mm45mm
SRPA21, SRPE99, SBDY017 “Turtle PADI”22mm45mm
SRPA2920mm42mm
SRPA81 “Tuna”22mm51.7mm
SRPA83 “Padi”22mm51.7mm
SRPD45, SRPD45K1, SRPD45K “Turtle Sea Grapes Okinawa”22mm45mm
SSC667 “Recraft”22mm43.5mm
SSC669 “Recraft”22mm43.5mm
SUP25018mm18mm
SUP88023mm28.4mm
SXDA20 “Velatura”26mm45mm