This newer OMEGA SPEEDMASTER PROFESSIONAL is a reference 3366 Limited & Numbered Edition of 1971 pieces world-wide. This watch is #178/1971. “The Apollo 15 Moon Watch” is dedicated to Scott Worden Irwin & the Apollo 15 Space Mission “Endeavor & Falcon” which flew from July 26th to August 7th 1971. This special edition has a Rose Gold Bezel, Hands, Pushers & Rims around the sub-dials. caliber 1861 movement which has a power reserve of 48 hours. This 42mm. OMEGA SPEEDMASTER watch has a sapphire crystal and is water resistant to 50 meters. All box and paperwork are included. This watch was not worn! On the wrist, this limited edition SPEEDMASTER is stunning!