| Manufacturer | Sellita |
| Caliber Number | SW510 M BH b |
| Base Caliber | SW510 M |
| Movement Type | Mechanical, manual-wind chronograph |
| Lignes | 13.25”’ |
| Diameter | 30mm |
| Height | 7mm |
| Jewels | 23 |
| Beat Rate | 28,800 bph, 4Hz |
| Lift Angle | 50 degrees |
| Acceptable Amplitude | 200-315 degrees |
| Power Reserve | ~58-63 hours |
| Hacking Seconds? | Yes |
| Quickset Calendar? | Yes |
| Chronograph System | Cam style |
| Anti-Shock Device | Incabloc |
| Mainspring | Niavaflex |
| Hairspring Collet | Nivatronic |
| Hand Count | 5 (depending on variation) |
| Functions | Central hours; central minutes; central chronograph seconds hand; small running seconds at 9:00; 30 minutes chronograph counter at 3:00 |
| Country of Manufacture | Switzerland, Swiss made |
| Known Models | Hanhart Pioneer 417 ES (Add your watch in the comments below…) |
The Sellita Caliber SW510 M BH b is a bi-compax, no-date, manual-wind mechanical watch movement. It is Swiss made with 23 jewels and a beat rate of 28,800vph.
For more information about the SW510 M BH b, please refer to the base caliber page for the SW510 M family of movements here.
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