Ref: 26400SO.OO.A055CA.01 K Series A Brand New in Box & Beautiful 2019 Limited Edition of 400 Pieces 44mm Audemars Piguet 26400SO Royal Oak Offshore Chronograph Camo in Stainless Steel Case with Green Ceramic Bezel & Khaki Green Dial, on Camouflage Rubber Strap with Steel Pin Buckle, in K Series. Purchased from Audemars Piguet Boutique.