OMF Upgrade Version The Highest Model in the Market Jaeger LeCoultre Master Series .1. Features a small seconds at the 6 o clock position, identical to the genuine product, equipped with a 7750 chronograph movement, with a frequency of 28,800 vibrations per hour.2. The entire watch boasts smooth lines, slim elegance, and a comfortable fit with a case diameter of 40mm.3. Sapphire dual anti scratch mirror, made of Swiss standard grade sapphire crystal glass, also features a super anti reflective coating, showcasing the brand s exceptional quality.4. Upgraded butterfly double push button clasp.OMF s sincere creation, welcome to appreciate and explore.