1.2500 movement is unidirectional automatic winding (winding efficiency is relatively low); The 8500 movement is bidirectional automatic winding (stable winding).
There is only one spring inside the 2.2500 movement, and the power is stored for 48 hours; Two clockwork boxes are connected in series inside the 8500 movement, and the power is stored for more than 60 hours.
There are 27 ruby bearings inside the 3.2500 movement; There are 398,500 movements.
4.2500 movement is guaranteed for 3 years; The 8500 movement is guaranteed for 4 years.
5.2500 movement maintenance cycle is 5-6 years; The maintenance period of 8500 movement is 8- 10 years.
The 2500 movement is the original ETA movement improved by Omega, which has been patented and divided into 2500a, 2500b and 2500c. Up to now, the 2500D movement has been criticized by the industry because of the widespread illegal stop at first, but it has been relatively perfect and stable after many improvements.
The 8500 movement is independently developed by Omega and belongs to Omega's iconic movement. There are many Swiss watchmaking brands, but only 20 have the ability to produce their own movements.
Extended data:
First, the history of Omega 2500 movement
From 65438 to 0999, Omega Omega introduced the Omega 2500 movement with coaxial escapement system, which attracted the attention of the whole mechanical watchmaking industry. Omega coaxial escapement system installed in watch movement is the first new escapement system with excellent application performance in two and a half centuries. This system can reduce the friction and energy consumption between the components of the escapement system, and keep the movement accurate and stable for a long time with the balance wheel without card balance, so the watch hardly needs to add lubricating oil. Therefore, Omega 2500 movement equipped with coaxial escapement system has also become one of the important inventions in the field of mechanical watches in the 20th century.
Second, the introduction of Omega 8500 movement
Omega launched 8500/850 1 coaxial movement in 2007, and each movement has 202 parts independently developed and manufactured by Omega with the most advanced technology. For serial number production, the movement manufacturing process has been optimized. The timing performance of Omega 8500/850 1 movement has attracted much attention in the mechanical watch industry.
For Omega, this is equivalent to returning to its roots. In fact, the brand name also comes from its 1890 self-developed and mass-produced movement. The launch of the 8500 coaxial movement once again proves that Omega develops, designs and manufactures the movement by itself, adhering to the fine tradition and spirit of the Swiss watchmaking industry.
With the birth of 8520/852 1 coaxial movement specially designed for small watches, and the complex function of 8601/861coaxial movement with instantaneous jump calendar, the development of coaxial movement is changing with each passing day.
The new generation of 8500/850 1 coaxial movements and these coaxial movements are equipped with Omega Si 14 silicon hairspring. This outstanding research and development achievement can effectively prevent earthquakes and avoid environmental interference, thus ensuring the accuracy of the watch. In addition, Omega, Rolex and Polaroid provide four-year maintenance service for watches equipped with exclusive coaxial movement and silicon hairspring combination.
References:
Baidu encyclopedia-Omega