Seiko Cal. 3821 - 139

The 3821-139 is a sought-after Automatic piece from Seiko's golden era. Powered by the 3821 caliber with 33j jewels beating at 36,000 bph, it delivers a 53 hours power reserve. [seikata-wm-f096925def44]

Also known as: Monster, Sea Horse

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

35mm

Case Thickness

12.9mm

Lug Width

18mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

30m

Dial Color

Green

Jewels

33j

Frequency

36,000 bph

Power Reserve

53 hours

Year

1995

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