Seiko Cal. 6640 - 267

This Solar model from 1972 features a 37mm Stainless Steel case. Powered by the 6640 caliber with 29j jewels beating at 36,000 bph, it delivers a 64 hours power reserve. [seikata-wm-f2f9e9d5051d]

Also known as: Baby Tuna, Arnie

Specifications

Movement

Solar

Case Material

Stainless Steel

Case Width

37mm

Case Thickness

8.9mm

Lug Width

19mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

160m

Dial Color

White

Jewels

29j

Frequency

36,000 bph

Power Reserve

64 hours

Year

1972

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