Seiko Cal. 3821 - 366

Released in 1969, the Cal. 3821 with design code 366 was part of Seiko's domestic market collection. Powered by the 3821 caliber with 31j jewels beating at 36,000 bph, it delivers a 42 hours power reserve. [seikata-wm-222431109809]

Also known as: Sumo, Panda

Specifications

Movement

Automatic

Case Material

Gold-Plated

Case Width

44mm

Case Thickness

9.9mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

80m

Dial Color

Cream

Jewels

31j

Frequency

36,000 bph

Power Reserve

42 hours

Year

1969

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