Piet Hein Eek is the Dutch designer of this watch and the iconic ring. To achieve a high level of detail, LEFF amsterdam uses a special cutting method to make the teeth. The ring is a unique design that stands out from the crowd and it's something you can't find at any other watch than a LEFF amsterdam watch.This LEFF amsterdam watch comes with a Japanese Miyota quartz movement.Your LEFF amsterdam watch uses 316L stainless steel for its cases. This is the most durable type of steel for watches and it does not corrode, rust or stain with water.The products within LEFF amsterdam's tube series have a recognizable raw and industrial character, while still keeping a sophisticated aesthetic.50 meters/ 5 ATM. water resistant