Specifications – Seiko Presage SPB521J1 "Edo Silk"

Movement

• Caliber Number: 6R51

• Movement Type: Automatic with manual winding

• Precision: +25 to -15 seconds per day

• Power Reserve: Approx. 72 hours (3 days)

• Jewels: 24

• Functions: Stop second hand function

Case / Band

• Case Size:

  • Diameter: 36.0 mm

  • Thickness: 12.5 mm

  • Lug-to-Lug: 41.4 mm

  • Distance Between Lugs: 18 mm

• Case Material: Stainless steel with super-hard coating

• Crystal: Dual-curved sapphire crystal

• Crystal Coating: Anti-reflective coating on inner surface

• Clasp: Deployment clasp with push-button release

• Bracelet Length: 195.0 mm

Other Details

• Water Resistance: 10 bar (100 meters)

• Magnetic Resistance: 4,800 A/m

• Weight: 118.0 g

• Features: See-through case back, screw case back