Seiko Cal. 6381 - 616

The Seiko 6381-616 represents an important milestone in Seiko's 1976 lineup. Powered by the 6381 caliber with 22j jewels beating at 36,000 bph, it delivers a 55 hours power reserve. [seikata-wm-0ea5afd3a9ec]

Also known as: Panda, Helmet

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

35mm

Case Thickness

8.3mm

Lug Width

19mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

100m

Dial Color

Blue Sunburst

Jewels

22j

Frequency

36,000 bph

Power Reserve

55 hours

Year

1976

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