Our Ultra Durable In House Clone Swiss movements are designed with improved key point parts like wider wheel teeth for heavy, long lasting use and lubed with 5 different types of durable Swiss lubricants. This results to a movement with typical service needs every 5 years instead of 2 that the genuine movements require. Also they are calibrated up to +5 secs per day within the COSC standards. All Clone movements feature Shock Resistant Movement Holder. In some models which Swiss ETA is used in the original we use exactly the same movement. As of this writing, our CLONED models are supplied with Ultra Durable In-house Clone Swiss movements.