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Exclusive, strictly Limited Edition model designed by famous Slovakian designer Michal Stasko consist of 10 pieces per color only.


1990 
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Biatec Golden Ratio LE 05

Two faces of the watch

We are supplying this exclusive limited watch with two straps. One elegant black calf leather and another one stylish dark blue strap resistable against water.


Case

  • Rosegold PVD coated polished stainless steel case 316L
  • Brushed and polished finish for the caseback
  • Front sapphire crystal with inner and outer antireflective coating
  • See-through sapphire crystal back with inner double antireflective coating
  • Caseback sealed with 4 screws
  • Caseback filled with a gold-plated silver COIN with Golden Ratio motif
  • Viton® sealing under caseback – resistant against chemicals
  • Big diamond crown with Biatec logo
  • Screwed brushed plate with Limited edition number applied to the bottom lug
  • Width: 40.00 mm without crown, 44.40 mm with crown
  • 48.00 mm lug to lug distance
  • Thickness: 12,83 mm
  • Lug width: 22 mm

Dial

  • Sunray dial with golden ratio line
  • Rosegold indexes
  • Big logo at 12 o`clock position
  • Rosegold matt hour hand and polished minute hands

Strap

  • Black calf leather and black stitching
  • Second dark blue color strap included
  • High resistance against water
  • 316L stainless steel buckle with Biatec logo
  • Medium padding, thickness: 4.00 mm
  • Length: 120.00 mm (long side), 80.00 mm (short side)

Water resistance

  • 50 meters, 5 atm

Movement

Swiss made Eterna calibre 3901A

Brochure_technique_3901A.pdf

Features

  • Self-winding
  • Vibrations per hour: 28.800
  • Frequency: 4Hz
  • Jewels: 29
  • Ball bearing: 5
  • Shock-absorber

Power reserve

  • ~65 hours

Treatment / Decor

  • Rhodium-plating / Shot-blasting

Rotor

  • Brushed oscillating weight