This unique watch was given as a loaner to Breitling owners that were having their watches serviced as part of a program initiated by the company in the early 90's, making this watch rare. Once the program was discontinued, the watches were sold off in lots. I purchased this one at an auction in France. I haven't attempted to open the back, as I see several attempts have been made with no success. I have worn the watch and it keeps great time. The watch measures 1 1/2" wide, the strap is a size 18. On the face the word 'Gold' seems to be missing partially otherwise it is in great condition. If you have any question, please feel free to ask.