Extremely rare, 30+ year old watch, as new with tags and documents. The Citizen Promaster Aqualand CO22 Original Divers Watch with Oxygen Tank Case. This wristwatch is perfect for men who love diving and want a reliable timepiece to wear while exploring the depths of the ocean. The watch features a yellow case and black strap, with a stylish diver design that is sure to impress. The brand Citizen is known for its quality and durability, and this watch is no exception. It is water-resistant up to 100 metres and comes with a unique oxygen tank case. This watch is ideal for anyone who loves diving and wants a stylish and functional accessory to wear while exploring the ocean.