Fits all the Modello Uno, Modello Due ref. U2-F and Modello Quattro. 22mm tapering to 20mm 185 mm length Size on U1: min. 145mm – max. 230mm Size on U2: min. 140mm – max. 225mm Folding clasp with double button release with diving extension 15mm micro-adjustable extension, with 2,5mm increments 116gr weight 4mm solid links 1.8mm screws Includes end-links to fit on any Modello Due ref. U2-F and Modello Quattro. Comes with a travel pouch that can hold up to two watches, together with a portable spring-bar tool.