Hi people there!
The earliest GMT was modified from the 2836 movement (Hangzhou Movement Factory), and it was specially customized for the Noob factory. But it is not a 1:1 molding movement, only the GMT function was added. And there is a problem with the order of its hands. The order of the GEN hands are: hour→GMT→minute→second, but Hangzhou 2836 is GMT→hour→minute→second.
Around 2020, Shanghai factory built a 1:1 3186 movement based on the 2836. The VR factory was the first put into use, so forum members call it VR3186. After that, many movement factories also used this movement. Until Clean, all the accessories were upgraded, especially the ceramic bezels.
The 3186 movement was not stable at the beginning, and there were various calendar stucking problems. There was no 3285 1:1 movement before, so they were all 126710 styles. Until recently, with the Shanghai and Dandong 3285 movement. The model is updated to 126720.
The following is the disassembling pictures of 3186. The GEN has 40 hours of power reserve, and the same for Shanghai 3186, there is no difference in power reserve.
Let's have a look↓
The earliest GMT was modified from the 2836 movement (Hangzhou Movement Factory), and it was specially customized for the Noob factory. But it is not a 1:1 molding movement, only the GMT function was added. And there is a problem with the order of its hands. The order of the GEN hands are: hour→GMT→minute→second, but Hangzhou 2836 is GMT→hour→minute→second.
Around 2020, Shanghai factory built a 1:1 3186 movement based on the 2836. The VR factory was the first put into use, so forum members call it VR3186. After that, many movement factories also used this movement. Until Clean, all the accessories were upgraded, especially the ceramic bezels.
The 3186 movement was not stable at the beginning, and there were various calendar stucking problems. There was no 3285 1:1 movement before, so they were all 126710 styles. Until recently, with the Shanghai and Dandong 3285 movement. The model is updated to 126720.
The following is the disassembling pictures of 3186. The GEN has 40 hours of power reserve, and the same for Shanghai 3186, there is no difference in power reserve.
Let's have a look↓