Seiko Cal. 6658 - 274

The 6658-274 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 6658 caliber with 33j jewels beating at 21,600 bph, it delivers a 57 hours power reserve. [seikata-wm-5cbd9c56eb89]

Also known as: Sumo, Navigator

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

37mm

Case Thickness

12.3mm

Lug Width

18mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

200m

Dial Color

Champagne

Jewels

33j

Frequency

21,600 bph

Power Reserve

57 hours

Year

1966

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