| Nickname: | Hydronalium-Triebwagen |
| Owner (company): | Deutsche Bundesbahn |
| Line number: | VT 70 970, 971 |
| Type: | Dieselmechanischer Triebwagen |
| Label: | VT 70.9/BPw-34a |
| Category: | Motorcar |
| Era: | 3b |
| Power transmission: | Mechanical transmission |
| Axle arrangement: | A 1 |
| Overall length: | 12475 mm |
| Width: | 3080/3140 mm |
| Heigth: | 3470 mm |
| Floor height: | 610 |
| Wheelbase: | 7000 mm |
| Traction wheel diameter: | 900 mm |
| Running wheel diameter: | 900 mm |
| Vehicle gauge: | Middle european + italian |
| Working weight: | 12300 kg |
| Weigth / m: | 0,99 t |
| Weight / Number of Seats: | 267 |
| Axle load: | 7,6 t |
| Seat: | 36 + 10 |
| Maximum speed: | 75 km/h |
| Manufacturer: | MAN |
| Made in (Year): | 1937 |
| Amount: | 2 |
| Fuel tank: | 290 l |
| Motor(s): | 1 × MAN W 6 V 15/18 |
| Motor nominal rating: | 110 kW |
| Motor r.p.m.: | 1500 1/min |
| Motor weight: | 1600 kg |
| MZYL: | 6 |
| Cylinder diameter: | 150 mm |
| Stroke: | 180 mm |
| Cylinder capacity: | 19,085 l |
| Transmission gear: | Wechselgetriebe Mylius cv2 leicht |
| Brake: | Hikpt (Klotz) |
| Heating system: | Air heating - motor cooling water |
| Lighting: | Electric |