| Owner (company): | Deutsche Bundesbahn |
| Line number: | 50 80 21-75 001/21-35 001 |
| Label: | Bwnrzb/Bnrzb 731 |
| Category: | Passenger coach |
| Era: | 4 |
| Overall length: | 26400 mm |
| Width: | 2830 mm |
| Heigth: | 3859 mm |
| Bogie type: | Linke-Hofmann-Busch LD76 |
| Running wheel diameter: | 730 mm |
| Weight: | 28000 kg |
| Seat: | 88 |
| Interiour arrangement: | Saloon, central corridor |
| Maximum speed: | 160/140 km/h |
| Manufacturer: | Messerschmitt-Bölkow-Blohm |
| Made in (Year): | 1976 |
| Out of service: | 1993 |
| Amount: | 1 |
| Brake: | KE-GPR-A (D) ep |
| Heating system: | Air heating - 1000 V 16,7 Hz, automatic control |