Asian 21j movement
Here’s another one of those common automatic movements and it comes in a variety of versions. These versions are generally reliable and inexpensive compared to the ETA movements. It’s capable of 21600bph. The Asian 21 Jewel movement often has a Chinese in origin and it is very dependable. It will last for long periods and usually has only 1 set of hands plus a date wheel.
Asian 7750 - Swiss ETA Valjoux 7750 replica movement
This movement has subdials at 6, 9 and 12 that dictate the half hour counter, seconds, and 12 hour counter in that order. ETA 7750 movements are used in the high-end Rolex Daytona replicas with the cheaper Daytona copies using Asian clone movements. This movement is available in 3-6-9 configuration. Although many do not agree that the older 21.6kbph models are reliable, most people do believe that if the watch has running seconds at 9, and is properly maintained, it’s going to be very reliable. The main rule with an Asian 7750 is to AVOID changing the date if the time is between 10 o’clock 2 o’clock. Also don’t reset the chronos when it’s running. Performing both actions simultaneously could potentially damage the movement.
The 7750 with seconds running at 6 is similar to the running seconds at 9 version, except that it has an extra module that enables the seconds to run on the 6 o’clock subdial. It is not very reliable, so if you decide to purchase a replica with this movement version like the one which you’ll find in a Rolex Daytona, you need to understand the risk. On the other hand if you want a Daytona replica with all the three subdials working you have to have a genuine ETA7750 or an Asian clone of the 7750 movement in your replica watch - there is no way around it.
Swiss 7750/7753 movement
This movement has gotten pricey lately and you won’t find it in many replicas anymore due to the cost. Nevertheless it’s a great movement and a lot more dependable than the Asian version. If you find a replica Rolex Daytona watch with this movement, you won’t regret it.
Asian 7753 movement
Like the 7750, the 7753 is an automatic chronograph movement. You’ll find the subdials at 3, 6 and 9.
However, the concept used on this watch is still a bit puzzling even if it is used in other brands aside from TAG Heuer.
Guide for replica watches with Swiss ETA movement ⌚ 2824-2 ETA 2836-2 2892-A2 and Valjoux 7750 movement replica & identical Asian copy movements. Reference
It is an ideal gift for your son which you can expect to last for a number of years. Just take good care of the watch and clean it regularly. Good maintenance is all it takes.
Swiss ETA 6497 Hand Wind Movements
This movement is often used in watches with a larger hand wind like the Panerai replica watches, Omega Knock off Railmaster, IWC FA Jones, and other large fake watches. There are "Swiss" and "Asian" 6497 movements and they come with different price tags. The average price difference is roughly $100.
One simple rule to go by is to wind the watch until you can't wind it any longer. Unless you can’t unwind it anymore and it has reached the full stop, you haven’t fully wound it.
The Asian 6497 models are a bit more sensitive to over-winding, particularly if the user fully winds the watch, and still continues to try to wind it until it breaks.
The 6497 beats at 18,000 BPH and it has about 46 hours in power reserve. This movement has been around for more than 70 years, and was in fact being used in old pocket watches. We’ve been shipping these movements for quite awhile now and we can say they are seldom ever damaged during shipping. It’s also labeled on our website as "Basic 6497" or "Upgraded 6497". The latter refers to a 6497 which has a swan's neck regulator and some small upgrades.