Seiko Cal. 6657 - 771

This Solar model from 1971 features a 39mm Two-Tone case. Powered by the 6657 caliber with 18j jewels beating at 36,000 bph, it delivers a 62 hours power reserve. [seikata-wm-4dff128c79fc]

Also known as: Pogue, Bullhead

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

39mm

Case Thickness

10.1mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

150m

Dial Color

Burgundy

Jewels

18j

Frequency

36,000 bph

Power Reserve

62 hours

Year

1971

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