The ZR-4 Diver is a premium chronograph designed specifically
to withstand the physical realities of deep water diving up to 30 atmospheres
of pressure. The ZR-4 Diver has vintage ‘70s diver influences with its large,
round shape [53mm], big bold luminescent painted numbers, custom silicone
rubber strap, and rotating bezel with engraved indices. The bezel also features
knurling on the outside edge marking 0 to 15 minutes. The ZR-4 Diver is
finished with a hardened mineral crystal and surgical-grade 316L stainless
steel, screw-down crown and pushers – all designed to increase its strength and
durability.