Seiko Cal. 6634 - 270

This Quartz model from 1979 features a 45mm PVD Black case. Powered by the 6634 caliber with 31j jewels beating at 21,600 bph, it delivers a 37 hours power reserve. [seikata-wm-7d33cfb2c9f1]

Also known as: Tuna

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

45mm

Case Thickness

9.4mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

80m

Dial Color

Blue Sunburst

Jewels

31j

Frequency

21,600 bph

Power Reserve

37 hours

Year

1979

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