Seiko Cal. 6388 - 241

The 6388-241 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 6388 caliber with 35j jewels beating at 21,600 bph, it delivers a 64 hours power reserve. [seikata-wm-54d2da786127]

Also known as: Helmet

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

36mm

Case Thickness

15.9mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

180m

Dial Color

Blue Sunburst

Jewels

35j

Frequency

21,600 bph

Power Reserve

64 hours

Year

1972

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