The chronomat 44 gmt a benchmark mechanical chronograph with a second and third time zone function this timepiece featuring a 44mm polished stainless steel case screwed in back screw locked crown bidirectional ratcheted rotating bezel with third time zone reading cambered sapphire crystal with glareproof treatment on both sides onyx black dial with silver sub dials self winding mechanical breitling 04 movement with date display chronograph function and 24 hour second time zone indicator