The Heirloom features a premium Japanese analog quartz movement, encompassed by 39mm case crafted from 316L surgical-grade stainless steel. The traditional detailing on the dial is evident in the solid, thick metal hour markers, double-printed minute track, and lume-filled hour & minute hands - giving the Heirloom a classic, antique look. The solid stainless steel case is paired with an 18mm lightweight, stainless steel bracelet which was designed with comfort in mind. The case has a built-in crown guard to protect the crown from accidental snags adding to the long lasting benefits. With a water resistance rating of 10 ATM/100 meters, the Heirloom is built to last.