Seiko Cal. 6648 - 131

This Quartz model from 1980 features a 40mm Two-Tone case. Powered by the 6648 caliber with 21j jewels beating at 36,000 bph, it delivers a 51 hours power reserve. [seikata-wm-941573d48971]

Also known as: Tuna, Crown

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

40mm

Case Thickness

11.0mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

110m

Dial Color

Cream

Jewels

21j

Frequency

36,000 bph

Power Reserve

51 hours

Year

1980

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