Seiko Cal. 6640 - 681

This Solar model from 1966 features a 45mm Gold-Plated case. It features a Green dial protected by a Mineral crystal and offers 160m of water resistance. [seikata-wm-d28c6e67f909]

Also known as: Samurai, Bullhead

Specifications

Movement

Solar

Case Material

Gold-Plated

Case Width

45mm

Case Thickness

14.5mm

Lug Width

19mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

160m

Dial Color

Green

Jewels

18j

Frequency

36,000 bph

Power Reserve

55 hours

Year

1966

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