Seiko Cal. 4525 - 820

This Quartz model from 1975 features a 38mm PVD Black case. The Inner Rotating bezel and 38mm case give it a distinctive presence on the wrist. [seikata-wm-3106e75a51b3]

Also known as: Helmet

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

38mm

Case Thickness

15.8mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

100m

Dial Color

Burgundy

Jewels

36j

Frequency

21,600 bph

Power Reserve

37 hours

Year

1975

Related Models

• Seiko 7080-538
• Seiko 7039-792
• Seiko 6134-520
• Seiko 7116-126
• Seiko 6623-928
• Seiko 6113-563
• Seiko 6153-580
• Seiko 0752-388
• Seiko 5671-945
• Seiko 7192-657
• Seiko 6274-704
• Seiko 6157-466