A tribute to the pioneering spirit of the brand, this Longines Heritage Classic Automatic Chronograph Men\'s Watch will accompany you on any adventure whether it\'s in the air, on land or under the sea. At A Glance  Presented on a black leather strap with pin buckle fastening 40mm case size with 30m water resistance Silver dial with two chronograph sub dials Arabic numbered hour markers with blue hands Scratch resistant sapphire crystal glass Powered by an automatic Swiss movement Power reserve of 54 hours