These straps are genuine vulcanized rubber and made in Italy.  2 pieces with 2 keepers, this is the newest version!  Genuine Marathon strap and a perfect replacement for original SAR, SAR D, MSAR, GSAR, TSAR or any professional diving watch requiring a 20mm strap.   

DIVE WATCH BAND, RUBBER STRAP. This vulcanized black rubber two piece wrist watch band or strap is 20mm (3/4 inch) wide and comes with a non-magnetic Stainless Steel Buckle. To be used on a Diver’s Watch WW194006 Diver’s Watch-Automatic Winding NSN 6645-21-558-0133 or WW194007 Diver’s Watch – Quartz NSN 6645-20-001-9382)

Strap, Wrist Watch, Vulcanized Rubber, Black, two-piece construction, 20mm (3/4 inch) wide
Comes with non-magnetic Stainless Steel Buckle
To be used on a Diver’s Wristwatch:
1. Marathon # WW 194006 Diver’s Watch-Automatic Winding)
(NSN 6645-21-558-0133)
2. Marathon # WW 194007 Diver’s Watch-Quartz)
(NSN 6645-20-001-9382)

More info.: 

These ship from the USA in a padded envelope and include tracking.  Buy more than one with no additional shipping fee.  Other colors available.  Please feel free contact me with any questions.