Automatic - self-winding mechanical movement beating at 288000 vibrations per hour. Monocrystalline silicone balance-spring power reserve up to 45 hours. Stainless steel bracelet case and bezel. Sunray blue dial with silver polished hands and applied indexes. Day of the month calendar at the 3 position. Triple safety folding clasp and push-piece opening mechanism. Sapphire crystal scratch resistant dial window. Transparent caseback. Lug-to-lug: 46.8mm. Lug width: 21mm. Case thickness: 9.35mm. Case size: 40mm. Water resistant to 30 M.