Seiko Cal. 3820 - 361

The 3820-361 is a sought-after Hand-Winding piece from Seiko's golden era. The Fixed bezel and 45mm case give it a distinctive presence on the wrist. [seikata-wm-e2f6e7fa0db4]

Also known as: Tuna

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

45mm

Case Thickness

9.3mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

140m

Dial Color

Green

Jewels

29j

Frequency

21,600 bph

Power Reserve

56 hours

Year

1987

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