40.50.04E
Functions
Hours, minutes, chronograph with 30 min- and 12 hours counters and central second hand, date- and day of the week display
Case
Polished stainless steel, crown flank protection, anthracite-black hard-material coated stainless steel pilot bezel features bidirectional rotation in minute increments, FKM-R sealing system
Dial and Hands
Electroplated black dial, indices coated with white luminescent color C1 (Grade X1), hands coated with white luminescent color C1
Specific features
2 stop-subdials, no subsidiary seconds
Leather Strap Antique Leather
Brown pull up leather with laquered edging and colored stitch.
Available with a pin buckle or folding clasp.
Dimensions
| Lug width |
20 mm |
| Loading width for pin buckle or folding clasp |
18 mm |
| Strap thickness at the lug |
3 mm |
| Strap thickness at the end |
3 mm |
| Length of the buckle section (measured to the center of the spring bar) |
72 mm |
| Length of the hole section (measured to the center of the spring bar) |
114 mm |
Suitable for:
- Deepwave
- Flieger Chrono
- Series 40
- Starfighter II
- Duograph
- SFL
- Flight Engineer
- Kalender 31
- Flight Officer
- Instrument 91
- Series 60
- Werksfahrer
- Model 361
- Series 155
- Monte•Carlo
- Flying Officer
- Series 31E
- Series 41
- Series 90E
Strap length Antique Leather
Is the length of the strap sufficient for my wrist size?
ideal wrist circumference: 184 mm
/ 7.2 in
min. wrist circumference: 163 mm
/ 6.4 in
max. wrist circumference: 203 mm
/ 8.0 in
How to determine the correct strap length?
