Seiko Cal. 3821 - 525

This Automatic model from 1990 features a 39mm Stainless Steel case. Powered by the 3821 caliber with 20j jewels beating at 36,000 bph, it delivers a 53 hours power reserve. [seikata-wm-568476d2f7b5]

Also known as: Tuna, Arnie

Specifications

Movement

Automatic

Case Material

Stainless Steel

Case Width

39mm

Case Thickness

13.3mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

50m

Dial Color

Navy

Jewels

20j

Frequency

36,000 bph

Power Reserve

53 hours

Year

1990

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