| Brand | Baume & Mercier |
| Caliber Number | BM 112824, BM112824 |
| In-House? | No |
| Base Caliber | ETA 2824-2 (see below…) |
| Movement Type | Automatic, self-winding mechanical |
| Lignes | 11.5”’ |
| Diameter | 25.6mm |
| Height | 4.6mm (unconfirmed) |
| Jewel Count | 25 |
| Beat Rate / Frequency | 28,800 bph / 4 Hz |
| Lift Angle | Unconfirmed |
| Power Reserve | 38~42 hours |
| Rotor Style | Ball-bearing system |
| Rotor Winding Direction | Bi-directional |
| Hand-Windable? | Yes |
| Anti-Shock Device | Incabloc |
| Regulator | ETACHRON |
| Hand Count | 3 |
| Functions | Central hours; central minutes; central sweeping seconds |
| Hacking Seconds? | Yes |
| Country of Manufacture | Switzerland, Swiss made |
| Known Models | Baume & Mercier Classima XL Open Heart (Ref: 65558)(Add your watch to the comments below…) |
The Baume & Mercier caliber BM 112824 is a 3-hander automatic movement with an open balance wheel at 12:00.
Previously, Baume & Mercier had their own caliber designation for the “BM 112824”, which used the ETA 2824-2 as the base, with 25 jewels. As of this post, it appears that the brand no longer uses their own caliber number and like many non-Swatch Group brands, they have transitioned to the Sellita SW200-1 AJ as a base calibre (see image below). The easiest way to determine which base caliber your watch has would be to find the jewel count: 25 jewels = ETA 2824-2 base / 26 jewels = Sellita SW200-1 base.
Video:
Additional Resources:
network of watch sites
Recent Comments
Dufrane Watches uses the Ronda-150 and i own a Barton Springs II watch from them…
Thanks, man. Yeah, definitely.
No worries! It's understandable. Thank you very much for coming back to leave a follow-up…
You're right this page is listed as 687 not 687.5. My last comment was an…
Thank you for coming back to share your accuracy experience with the community :)
I want to add the info regarding accuracy of a/m watch. It gains abt. 4…
Thank for for taking the time to point out the error in the jewel count!…