Capturing the brands vintage spirit Master Chronometer certification from METASA 40. 55mm case paired with a brown leather strap Brushed bezel featuring a blackened tachymeter scale Precision provided by the 9906 calibre movement REFINED ELEGANCEOriginally introduced in 2013, the Speedmaster 57 collection returns with a refined appearance and Master Chronometer features. Eight new stainless steel models feature a slimmer profile, bold colour, and advanced co-axial movement while still capturing the brands vintage spirit. ADVANCED FUNCTIONALITYCertified and approved by METAS, this Master Chronometer features a 40. 55mm stainless steel case and brushed bezel with a blackened tachymeter scale. The black dial with recessed indexes presents rhodium-plated hands, a date window at six oclock, and chronograph markers. Presented on a brown leather strap, this timepiece is powered by the 9906 co-axial calibre movement for advanced precision.