
Built on the reliable Miyota 8215 caliber, we engineered this modified skeleton automatic movement. Specifically, hollowed bridges expose the gear train and a 6 o’clock balance wheel within a slim 5.15mm profile. Simultaneously, a self-winding rotor ensures battery-free operation. Ultimately, we offer complete private label customization and rotor engraving for your watch brand.
Drawing inspiration from reliable Japanese caliber engineering, we designed this modified Miyota 8215 automatic movement around an openwork skeleton architecture. Specifically, watchmakers hollow out the movement bridges to expose the internal mechanical gear trains and jewel bearings. Simultaneously, an exposed balance wheel at the 6 o’clock position reveals the regulating organ in continuous motion. Consequently, the movement achieves structural transparency while maintaining the functional integrity of a traditional three-hand display.
Where complex skeleton builds often add unwanted bulk, we engineered this modified 8215 caliber to maintain a slim profile of just 5.15mm. Therefore, watch brands can house the mechanism inside sleek case profiles without compromising daily wear durability. In fact, the integrated self-winding rotor utilizes the wearer’s wrist motion to power the mainspring continuously. As a result, the movement delivers a dependable, battery-free mechanical experience suited for everyday use.
Meanwhile, operating at 21,600 vibrations per hour with 21 synthetic ruby jewels, the movement provides steady rate stability and reliable power reserve standards. Additionally, the standard three-hand configuration allows straightforward hands-and-dial mounting for various case designs. Simultaneously, exhibition case backs display the inner mechanical work from both sides. Turn the movement over, and the structural finishing showcases consistent industrial-grade execution.
Ultimately, as a specialized watch manufacturing facility, we offer full-scope OEM and ODM customization options, including custom logo execution, rotor engraving, or specialized movement finishing for your brand.
| Product Model | M8001 |
| Brand | Miyota 8215 |
| Movement type | Automatic, self-winding mechanical |
| Feature | Skeleton, Balance wheel exposed at 6 o’clock |
| Frequency | 21600/h |
| Jewel Bearing | 21 |
| Power reserve | 42/h |
| Diameter | 30mm |
| Thickness | 5.15mm |
| Shape | Special |
| Customization | Low MOQ customization |