This is a GShock GA-110 that has been modified with a Jays and Kays strap adapter and a 24mm NATO Strap Co. Black-Striped Z3. It’s much more comfortable than the original resin strap and customizable with 24mm one- or two-piece straps to suit your taste. It has a fresh battery change from about 1 month ago and gasket was lubed while the case was open. No scratches or marks on the crystal. A small ding on a bottom of the case.
