The micro-automatic disk movement was introduced in the 1950s, and the concept of introducing this smaller-size automatic disk is mainly to strengthen the slimness of the whole movement. The micro-automatic disk, also known as the small automatic disk, the quarter automatic disk or the pearl turret, is reduced in size and covered in the whole movement, and naturally does not need to cover the movement to increase its thickness. Piaget’s 12P calibre was introduced in 1960. In the absence of a computer, it was very difficult to punch, cut or drill. Therefore, Piaget contributed a lot to the development of micro-automatic discs and led the future. The development of ultra-thin movements. How to define the ultra-thin movement? There is no standard in the watch industry. Generally speaking, the manual movement is less than 2mm, the automatic movement is within 3mm, and the quartz movement is within 1mm, which can be included in the ultra-thin category. The thickness of the thin micro-automatic disk movement is below 2.5mm, and the movements within this standard are rare. Bestwatcheap.co offer replica TAG Heuer carrera watches with best quality, all replica watches are in high quality.
The 12P thickness of iaget is only 2.3mm. Although it is a micro-automatic disc, it adopts a two-way refining structure. It is equipped with a 24K automatic disc fixed by a micro-bend straddle bridge, which has good performance. It is equipped with a screw balance wheel, the vibration frequency is 19800, and the subsequent model is 12P-1. It has been changed to a ring-shaped pendulum, and the vibration frequency is increased to 21600, which has an effect on the stability and precision of the walking. The Cal.240 movement of PP is a new generation of automatic winding movement developed by the brand in the 1970s. It also uses micro-automatic discs. Its material is 22K gold, one-way refining, thickness is 2.4MM, vibration frequency is 21600 times, configuration list The layer alloy hairspring is fine-tuned by the eight weights on the balance wheel. It has been used for 40 years, and it can be seen in the models below the perpetual calendar. The performance is quite competent.
In 2010, Piaget restarted the development of ultra-thin movements, and launched a number of record-breaking ultra-thin movements, including complex functions, which are almost the brand’s characteristics. The 1200 series is an ultra-thin micro-automatic disc movement developed on the basis of 12P. It adopts a one-way training design, which is different from the original two-way refining structure. It is mainly used in the Altiplano model. It has two needles (1200P) and three needles. (1208P) and the addition of calendar (1205P) and other features, and even a hollow version of the 1200S movement. In order to meet the ultra-thin design, the current ultra-thin movement has been developed in the lateral direction. The diameter of the movement is nearly 30 mm. All components need to be reduced in thickness, the gears are thinner, and the shaft is also shorter. When the precision is high, The difficulty of assembly is even more powerful. This is an amazing movement project, and Piaget has taken the lead in this field.
The research and development technology of Bulgari ultra-thin movement has made a major breakthrough in recent years. Since 2014, the ultra-thin tourbillon movement has been introduced, with a thickness of only 1.95MM and a case thickness of 5.0MM. In 2016, the thickness of the movement is only 3.62MM. The three-question time movement has a case thickness of 6.85MM. This year, Baselworld published an ultra-thin automatic refining movement with a thickness of only 2.23MM. It uses a micro-automatic disc with a case thickness of 5.15MM, all of which broke the world record. At present, the automatic refining movement with micro-automatic discs is less than 2.5mm thick, and the movement of the small second hand mainly includes PP 240, Piaget 1208P and Bulgari 138, among which Bulgari is the most unique.