Seiko Prospex Speedtimer Mechanical Chronograph - SRQ047J1 BF-D Seichu is a Japanese braiding

Seichu is a Japanese braiding technique seen in a traditional “obijime

2 years Jewels 14 Case Material Titanium (super-hard coating) Case Thickness 12

6 months (full charge)

Other SpecificationsWater Resistance: 10 barWeight: 147

starting with the 1964 Olympics and continuing into the IAAF partnership today

Seiko Prospex Speedtimer Mechanical Chronograph - SRQ047J1 BF-D Seichu is a Japanese braidingMovement Caliber Number 8R46 Movement Type Automatic with manual winding Precision +25 to 15 seconds per day Power reserve Approx. 45 hours Jewels 34 Functions Equipped with small seconds hand Stop second hand function Case Band Case Material Stainless steel (hard coating) Case Size Thickness: 15. 1mm Diameter: 42. 5mm Lug to lug: 50. 0mm Crystal Dual curved sapphire crystal Crystal Coating Anti reflective coating on inner surface LumiBrite LumiBrite