The last heavyweight BF new product A/Audemars Piguet Royal Oak series 26331 chronograph special model with transparent bottom, and 26240 transparent anniversary model are shockingly launched. It uses the same 7750 chronograph movement as the original (6-digit small seconds). The 316 stainless steel case is brushed and partially polished to show the Exquisite and tough unique temperament, rough and majestic 41mm dial, full of strength, super luminous display, can read time in any environment, audemars