Before purchasing please note the PROS & CONS of buying prototypes. CONS Prototypes do not go through the same level of Quality Control the Full Production Watches go through - so they may or may not have imperfections that show up with a macro camera lens like Gary from I Like Watches pointed out in his Review of the M3. PROS It’s kind of special ‘cause there’s only 7 made in the whole wide world. Mark 3 Specs 39mm x 46mm Lug to Lug 20mm band width Japanese Miyota 9039 Automatic Movement BGW9 Lume Double Dome Sapphire Glass with AR coated on inside 10 ATM Waterproof 11.5mm Height at peak of Double Dome Sapphire Quick Adjust & Quick Release Brushed Steel Bracelet Free Shipping 7-day free return 2 Year Warranty TÜV Rheinland German Certified Manufacture DOES NOT INCLUDE LEATHER STRAP (Image with strap is sold separately)