Seiko Cal. 4418 - 521

This Spring Drive model from 1996 features a 37mm Hardlex-Coated Steel case. With its 18mm lug width and 15.4mm profile, it sits comfortably on most wrists. [seikata-wm-eaccf4810588]

Also known as: Tuna, Crown

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

37mm

Case Thickness

15.4mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

170m

Dial Color

Black

Jewels

35j

Frequency

28,800 bph

Power Reserve

58 hours

Year

1996

Related Models

• Seiko 0718-818
• Seiko 5660-997
• Seiko 3851-621
• Seiko 5249-656
• Seiko 6124-546
• Seiko 5221-446
• Seiko 5626-315
• Seiko 3853-880
• Seiko 5643-365
• Seiko 4522-449
• Seiko 4549-735
• Seiko 0713-248