Miyota Japanese quartz 3 hand.; 31mm, 100 meter / 10 ATM, custom handmade Mazzucchelli acetate case, fixed handmade acetate bezel, hardened mineral crystal, triple gasket stainless steel crown, stainless steel screw down caseback and spring pin lugs.; 16mm custom handmade Mazzucchelli acetate 3 link bracelet with stainless steel double locking clasp with micro adjust.