The KY factory produced the Longines Masters series, the original model opened, equipped with the Swiss ETA2824 Automatic Movement consistent with the original. That is the Longines model L2.628.5.37.7 movement. The diameter is 38.5mm and the thickness is 9.5mm. All accessories including the movement are interchangeable with the original ones. KY Factory AAA Replica Watches is the highest version in the market.