SEIKO Spring Drive Spacewalk:
The Quiet Revolution goes into space

• Specifications: • Caliber: Spring Drive Chronograph 5R86
• Case: High-intensity Titanium
• Diameter 53.0 mm (12-6h) , 48.7 mm (3-9h)
• Thickness 15.2 mm Weight 92.5 g
• Glass: Sapphire crystal with anti-reflective coating
• Water resistance: 10 Bar
• Bracelet: The final specification is yet to be decided. SEIKO is now working with the Russian Federal Space Agency on the optimum design.
• Spring Drive Chronograph Caliber 5R86:
• Hour, minute and second hands with calendar
• GMT hand
• Power reserve indicator
• 50 jewels
• Movement Diameter: 30.0 mm Thickness: 7.6 mm
• 416 parts
• Power reserve: 72 hours with/without chronograph function in use
• Chronograph to 12 hours