This is a rare black dial version and early generation (see picture of movement) of Citizen Cosmotron produced in early 70s. Watch in perfect working and cosmetic condition, without any trace of use, bracelet is original have full size and it is very comfortable to wear.

This is an electro-mechanical watch, it is not quartz and uses transistors and an electromagnet to work, it has a classic clock movement except that an electric module is inserted of a winding spring.

Original Japan made.