Omega constellation f300hz the watch is in fantastic condition as you can see from the photos. The strap I believe is original, would probably benefit from an upgrade. The paperwork is all as you see it with receipt from 1980. The watch has clearly had very little wrist time. Comes with original inner and outer boxes. You won't find another full set in this condition anyway near this price. It keeps very active, water resistant cannot be guaranteed due to age. It had a service about 3 months ago so the movement it all good and as I said keeps great time.