Uniqueness
The real highlight of the watch is a Swiss automatic movement Eterna 3901A with a specially customized Biatec propeller rotor inspired by the Vought F4U Corsair aircraft.

Big diamond crown
Big diamond crown with Biatec logo remains us old days when pilots could easily wind or adjust their watches while wearing gloves. The lugs of the watch are also a reminder of the legendary design of the Corsair’s wings.

Technical specifications
Case
- 316L stainless steel case
- Brushed and polished finish
- Front Sapphire crystal with antireflective coating on both sides
- See-through Sapphire crystal back with inner double antireflective coating
- Screwed caseback
- Viton® sealing under caseback – resistant against chemicals
- Big diamond screwed-down crown with Biatec logo
- Screwed polished serial number plate applied to the bottom lug
- Width: 40.00 mm without crown, 44.20 mm with crown
- 48.00 mm lug to lug distance
- Thickness: 12.8 mm
- Lug width: 20 mm
Dial
- Black lacquered dial
- Small seconds dial at 9.00
- 3D golden numbers printed with Super-LumiNova® T3 grade A
- Golden hands filled with Super-LumiNova® T3 grade A
Strap
- Vintage nubuk brown leather with brushed surface and white stitching
- Very comfortable, thickness: 2.75 mm
- Length: 116.00 mm (long side), 83.00 mm (short side)
- 316L stainless steel buckle with Biatec logo
Water resistance
- 100 meters, 10 atm

Features
- Self-winding
- Vibrations per hour: 28.800
- Frequency: 4Hz
- Jewels: 29
- Ball bearing: 1
- Shock-absorber
Power reserve
- ~65 hours
Treatment / Decor
- Rhodium-plating / Shot-blasting
- Pearl pattern on the bridge
Rotor
- Customized for Biatec
- Propeller with black and yellow colors
- Corsair logo on oscillating weight