Seiko Cal. 6663 - 838

The Seiko 6663-838 represents an important milestone in Seiko's 1969 lineup. Powered by the 6663 caliber with 27j jewels beating at 28,800 bph, it delivers a 50 hours power reserve. [seikata-wm-48833507b4ac]

Also known as: Monster, Panda

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

35mm

Case Thickness

14.5mm

Lug Width

20mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

80m

Dial Color

Black

Jewels

27j

Frequency

28,800 bph

Power Reserve

50 hours

Year

1969

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