**Citizen Cosmotron cal 7804** Watch is in NOS condition. Cosmotron electro-mechanical movements first produced in 1966 were, for a short time, Citizen’s most accurate watches – capable of reaching chronometer grade standards. **Inside is cal 7804 - electronically controlled balance motor with sweep second.** Movement is interesting, for quick shift of date you hold watch 12h marker face up (like you willnormal hold watch) and to change day hold watch with 6h market up 😊 (upside down😊). Pressing crown in ofc. Works as need to, I am unsure when battery was changed but it issomething that can be find at anywatchmaker… case: 37.5mm / lugs 18mm /thick 12.3 Bracelet is shorter then factory made, it is max 19cm wrist size. Pictures: https://imgur.com/a/NYsW5zc Timestamp: https://i.imgur.com/ffIM0Nu.jpg Price: **280$** paypal (FF or G&S +5%), WISE or Revolut / shipment included in price, worldwide (from EU ) The watches I sell are from my personal collection, I am a fan of watches, I often renew my collection by buying and exchanging watches with other collectors around the world.