Seiko Cal. 3871 - 990

This Quartz model from 1976 features a 36mm Hardlex-Coated Steel case. With its 19mm lug width and 10.0mm profile, it sits comfortably on most wrists. [seikata-wm-3f5c820203f1]

Also known as: Turtle

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

36mm

Case Thickness

10.0mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

70m

Dial Color

Green

Jewels

29j

Frequency

28,800 bph

Power Reserve

48 hours

Year

1976

Related Models

• Seiko 5676-842
• Seiko 7056-328
• Seiko 5673-161
• Seiko 3879-742
• Seiko 6692-668
• Seiko 7080-202
• Seiko 5218-290
• Seiko 5220-598
• Seiko 6281-226
• Seiko 7018-652
• Seiko 5249-313
• Seiko 6172-450