Up for sale is a rare Seiko A829-6040 Rotocall. The name Rotocall came from the way the watch operates. You don't need to push any button to change between modes. Everything can be done just by rotating the bezel. Another two variations of this watch were also worn by a NASA astronaut in the 1980s (a829-6019 and a829-6029). The watch was not assigned by NASA by any means. It was just the astronaut's personal choice.  
• Case size: 35mm, 42 mm from lug to lug
• Lug width: 20mm  
• Thickness: 9mm  
• Movement: Housing Seiko A829 digital movement, which is currently working as it should (it's really hard to find one A829 movement that works properly).  
• Condition: Everything is original. The crystal has some scratches on it. Unpolished case with some signs of use.
  
• Accessories: No box or paper. Come with an aftermarket rubber band and an aftermarket Seiko buckle.