316L Surgical-Quality Stainless Steel Case; Precision Japanese Quartz Movement; Non-Glare Scratch-Resistant Mineral Crystal; 4 Crystal Markers; Logo-Engraved Stainless Steel Caseback; 316L Surgical-Quality Stainless Steel Bracelet with Enamel Design; Stainless Steel Jewelry Clasp; 33mm Case Diameter; 5ATM Water Resistance. The Bertha Katherine features a 316L surgical-quality stainless steel case and bracelet with an enamel design. It is powered by a precision Japanese quartz movement and has a non-glare scratch-resistant mineral crystal. The watch includes 4 crystal markers, a logo-engraved stainless steel caseback, and a stainless steel jewelry clasp. It has a 33mm case diameter and is water-resistant up to 5ATM.