Nixon The Sentry 38 Leather watch. Doing more with less. Our inspiration for The Sentry 38, comes from the movement towards making an impact with understated size. Scaled down, this watch displays bold dials and a distinctive look with subtle proportions. Imported.Miyota Japanese quartz 3 hand movement. 38mm, 100 meter/10 ATM custom solid stainless steel case, fixed stainless steel bezel, hardened mineral crystal, double gasket stainless steel crown, stainless steel screw down caseback and spring pin lugs. 21mm leather strap with stainless steel buckle.