The Montblanc 128672 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 silvery white analogue dial with a date display and rose gold Arabic numerals and indexes which is protected beneath domed scratch resistant sapphire crystal glass with an anti-reflective coating. Power is generated by the Calibre MB 24. 17 automatic movement with 25 jewels and a power reserve of up to 38 hours. This model also has a water resistance of up to 50 metres