The Montblanc 128673 Heritage watch is inspired by historical Minerva classic wristwatches from the 1940s and 1950s and combines a 40mm round shaped stainless steel case and brown leather strap with a traditional buckle. It has a brown fade analogue dial with 18k rose gold SuperLuminova coated hands which is protected beneath scratch resistant sapphire crystal glass. Power is generated by the Calibre MB 24.17 automatic movement with 26 jewels and a power reserve of up to 38 hours. This model also has a water resistance of up to 50 metres.