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I'm constantly getting pms asking what size is the strap for model z,y,x; will a strap x fit a watch y; will the diver buckle fit 44mm ROO strap and so on, so i decided to write a small memo.
Diver strap (all divers from v2 onwards, including FC, Ceramic, QEII and fantasies) : width at the case is 28, taper to 24 at the buckle has oblong holes for the pin of about 7.5mm each. Noob and JF diver straps are interchangeable. XF and JF diver straps are interchangeable. Regular length is 115/75, XS 105/65
42mm ROO chrono straps NOOB version (especially older ones): width at the case is 28 and then tapers to 18mm at the buckle (deployant) has round holes 2mm in diameter. Don't fit well on divers or Jf 42mm roos, so they are not interchangeable if you want a perfect fit. (isn't it the most important thing in a good strap ?)
42mm ROO chrono straps JF versions : width at the case is 28 and then tapers to 18mm at the buckle (deployant) has round holes 2mm in diameter. Don't fit well on NOOBs versions of 42mm ROO chronos. Fit all the divers (except HF) just also get the deployant as the diver buckle won't fit it.
novelty (SIHH 2014) 42mm from JF: width at the case 28, tapers to 20 at the buckle, has oblong holes for the buckle pin of about 5.5mm. So the buckle has the same style but it is narrower than diver buckle.
44mm ROOs(also schumis and GPs): width at the case is 30, tapers to 24, same buckle as the diver. Regular length - 115/75, XS 105/65
Important addition.About the buckles. Again, there were couple of misunderstandings concerning the buckle sizes. First and foremost the diver and 44mm ROO buckles are of the same size and exactly 24mm second the new 2014 SIHH style buckles are exactly 20mm not 22 or any other size.
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Updated May 7 2018
Diver strap (all divers from v2 onwards, including FC, Ceramic, QEII and fantasies) : width at the case is 28, taper to 24 at the buckle has oblong holes for the pin of about 7.5mm each. Noob and JF diver straps are interchangeable. XF and JF diver straps are interchangeable. Regular length is 115/75, XS 105/65
42mm ROO chrono straps NOOB version (especially older ones): width at the case is 28 and then tapers to 18mm at the buckle (deployant) has round holes 2mm in diameter. Don't fit well on divers or Jf 42mm roos, so they are not interchangeable if you want a perfect fit. (isn't it the most important thing in a good strap ?)
42mm ROO chrono straps JF versions : width at the case is 28 and then tapers to 18mm at the buckle (deployant) has round holes 2mm in diameter. Don't fit well on NOOBs versions of 42mm ROO chronos. Fit all the divers (except HF) just also get the deployant as the diver buckle won't fit it.
novelty (SIHH 2014) 42mm from JF: width at the case 28, tapers to 20 at the buckle, has oblong holes for the buckle pin of about 5.5mm. So the buckle has the same style but it is narrower than diver buckle.
44mm ROOs(also schumis and GPs): width at the case is 30, tapers to 24, same buckle as the diver. Regular length - 115/75, XS 105/65
Important addition.About the buckles. Again, there were couple of misunderstandings concerning the buckle sizes. First and foremost the diver and 44mm ROO buckles are of the same size and exactly 24mm second the new 2014 SIHH style buckles are exactly 20mm not 22 or any other size.
--
Updated May 7 2018
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