The 51-30 PU Watch in Black is one of Nixon's most impressive looking watches we've had. The 51.25mm diameter case is made from custom 300 metre stainless steel, a hardened mineral crystal face, an external rotating countdown bezel and a screw crown. Set into the face is a tide dial and oversized hands. The 25mm wide band is made from custom injected polyurethane and features Nixon's patented locking looper and a stainless steel buckle. The movement is custom 3 hand Swiss quartz.