Seiko Cal. 6638 - 627

This Automatic model from 1973 features a 39mm Titanium case. Powered by the 6638 caliber with 21j jewels beating at 28,800 bph, it delivers a 53 hours power reserve. [seikata-wm-412f08b09872]

Also known as: Panda, Silverwave

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

39mm

Case Thickness

11.9mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

160m

Dial Color

Burgundy

Jewels

21j

Frequency

28,800 bph

Power Reserve

53 hours

Year

1973

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