Tag Archive for 21 jewel

Miyota 8215

I’m seeing that a lot of people are searching for the Miyota 8215 movement and for information regarding it’s viability as an Eta replacement. I wanted to throw together some basic info and specifications for you regarding this movement.

The Miyota 8215 is Japanese made, an automatic movement designed for wrist watches and used by many different watch makers. The Miyota brand is a member of the Citizen conglomerate. As we know most wrist watch makers can’t produce their own movements and this quality Japanese movement is a good alternative for many companies including well known brands like Citizen, Invicta and Jacques Lemans.

The 8215 movement is a 21 jewel movement with a left rotation (unidirectional) winding system. It’s accuracy is a modest -20 to +40 seconds per day, not amazing, but acceptable for most low end watches. One glaring disadvantage to this movement that may annoy it’s users is it’s lack of a hacking mechanism. The lack of hacking means it’s unable to stop the second hand movement when the crown is pulled out to the quick set time position. This movement has a 40 hour power reserve which is more than adequate for most customers.

Another disadvantage to this movement for some, will be it’s low beat 21,600BPH performance. This will make the watch ‘tick’ more compared to 28,800BPH that many are accustomed to.

Overall this movement is not a bad choice vs some of the ETA offerings, but it’s lacking in several key areas. I would stick with ETA!

ETA 2824-2 vs Miyota 8215

As most of you surely know, the majority of watch makers don’t have their own in-house movements. They usually purchase their movements from ETA, Valjoux and other firms. This became exceptionally common after the advent and popularity of quartz driven watches. Everyone wanted a quartz watch for their unparalleled precision, reliability and dirt cheap pricing. This forced the surviving watch makers to start buying movements rather than developing their own. There are of course exceptions such as the new Breitling B01 movement.

So I would like to give you a comparison review of these two extremely common automatic movements. These movements have been used in countless watches for many years. They are excellent movements and provide accurate and reliable mechanics for your coveted time pieces. We see the ETA 2824-2 movement in many watch makers brands. While the Miyota movement is common in lower priced watches from Invicta and Citizen running as cheap as $100! Read more