Seiko Cal. 3870 - 521

The Seiko 3870-521 represents an important milestone in Seiko's 1983 lineup. With its 18mm lug width and 11.4mm profile, it sits comfortably on most wrists. [seikata-wm-5ae5ef56cf8d]

Also known as: Goldfeather

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

42mm

Case Thickness

11.4mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

150m

Dial Color

Cream

Jewels

30j

Frequency

28,800 bph

Power Reserve

60 hours

Year

1983

Related Models

• Seiko 4534-795
• Seiko 5275-783
• Seiko 6180-315
• Seiko 6262-794
• Seiko 5285-294
• Seiko 6642-429
• Seiko 3895-823
• Seiko 6643-845
• Seiko 4520-807
• Seiko 4587-838
• Seiko 6347-601
• Seiko 0734-718