The men's Nixon 51-30 Chrono watch features a 6 hand Japanese quartz with a second sub dial, chrono and date. A customer 300 meter stainless steel case with a hardened mineral crystal, external rotating bezel with a countdown timer, and screw crown at 9 o'clock posistion (51.25mm diameter). A custom solid stainless steel band with a double locking clasp (25mm wide).