The Omega Speedmaster ‘Broad Arrow’ was introduced in 2002, pairing design elements from the original 1957 Speedmaster with Omega’s [then] latest and greatest chronograph movement. Signature elements include the engraved tachymeter bezel -diamond-set in some cases- and the ‘Broad Arrow’ hand-set.Reference 3557.50.00 is near identical to the earlier 3851.50.11.
