King Seiko SPB391J1

Caliber Number: 6R55

Movement Type: Automatic with manual winding

Precision: +25 to -15 seconds per day

Power Reserve: Approx. 72 hours(3 days)

Functions:

• Stop second hand function
  

Case Material: Stainless steel

Case Size

• Thickness: 11.7 mm
• Diameter: 38.3 mm
• Lug-to-lug: 46 mm

Crystal: Box shaped sapphire crystal

Crystal Coating: Anti-reflective coating on inner surface

Distance between lugs: 19

Water Resistance: 10 bar

Features:

• LumiBrite on Hands
  Interchangeable band with quick release spring bars
  Screw case back