Seiko Cal. 3897 - 879

This Spring Drive model from 1978 features a 41mm Hardlex-Coated Steel case. With its 20mm lug width and 15.6mm profile, it sits comfortably on most wrists. [seikata-wm-16b109be56cb]

Also known as: Sumo

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

41mm

Case Thickness

15.6mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

140m

Dial Color

White

Jewels

36j

Frequency

21,600 bph

Power Reserve

49 hours

Year

1978

Related Models

• Seiko 6196-115
• Seiko 0784-611
• Seiko 4480-819
• Seiko 7114-804
• Seiko 6354-434
• Seiko 0771-755
• Seiko 7090-452
• Seiko 6660-663
• Seiko 6654-146
• Seiko 6261-179
• Seiko 4520-796
• Seiko 6619-287