Seiko Cal. 6618 - 402

The 6618-402 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 6618 caliber with 19j jewels beating at 21,600 bph, it delivers a 49 hours power reserve. [seikata-wm-94aae142ada4]

Also known as: Tuna

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

35mm

Case Thickness

13.6mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

200m

Dial Color

Champagne

Jewels

19j

Frequency

21,600 bph

Power Reserve

49 hours

Year

1980

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