Seiko Cal. 5660 - 647

This Quartz model from 1981 features a 43mm Two-Tone case. Powered by the 5660 caliber with 21j jewels beating at 21,600 bph, it delivers a 49 hours power reserve. [seikata-wm-9ff059d6369e]

Also known as: Bellmatic, World Timer

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

43mm

Case Thickness

10.4mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

100m

Dial Color

White

Jewels

21j

Frequency

21,600 bph

Power Reserve

49 hours

Year

1981

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