Seiko Cal. 3821 - 828

This Spring Drive model from 1975 features a 35mm Stainless Steel case. The Rotating bezel and 35mm case give it a distinctive presence on the wrist. [seikata-wm-c5b6748f7e81]

Also known as: Monster, Sumo

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

35mm

Case Thickness

14.5mm

Lug Width

20mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

200m

Dial Color

Green

Jewels

24j

Frequency

36,000 bph

Power Reserve

48 hours

Year

1975

Related Models

• Seiko 5624-715
• Seiko 3880-674
• Seiko 6239-505
• Seiko 0771-923
• Seiko 6656-274
• Seiko 4421-337
• Seiko 6610-322
• Seiko 3890-354
• Seiko 7117-194
• Seiko 6266-449
• Seiko 7050-432
• Seiko 6215-865