Seiko Cal. 3881 - 204

This Kinetic model from 1970 features a 40mm Hardlex-Coated Steel case. Powered by the 3881 caliber with 36j jewels beating at 36,000 bph, it delivers a 37 hours power reserve. [seikata-wm-2cd2ff12ce90]

Also known as: Sumo, Panda

Specifications

Movement

Kinetic

Case Material

Hardlex-Coated Steel

Case Width

40mm

Case Thickness

13.0mm

Lug Width

21mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

140m

Dial Color

Blue Sunburst

Jewels

36j

Frequency

36,000 bph

Power Reserve

37 hours

Year

1970

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