Junkers calls this watch the 1st Atlantic Flight Dual Time Big Date 6440-1. That’s a mouthful. The crown at 3:00 is for setting the main time and date. The crown at 4:00 can control the dual time subdial for GMT functionality (keeping time in two time zones).
Detailed Specs:
- Reference: 6440-1
- Movement: Quartz
- Caliber: Ronda 6203.B
- Case: Stainless steel
- Diameter: 42mm
- Thickness: ~10mm
- Lug-to-Lug: ~51mm
- Dial: silver
- Crystal: Mineral
- Band: Black Junkers leather strap
- Lug-Width: 22mm
- Water Resistant up to 50m/165ft
- Retail Price: NA, Discontinued
What’s Included? Junkers box, manual (signed and dated 2014), caliber booklet, original tag.
Condition: Excellent overall. Was part of a huge collection and saw minimal wrist time. New battery installed!
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