Seiko Cal. 6355 - 528

The 6355-528 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 6355 caliber with 21j jewels beating at 28,800 bph, it delivers a 71 hours power reserve. [seikata-wm-fe5a84d67bc4]

Also known as: Sumo

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

39mm

Case Thickness

13.9mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

200m

Dial Color

Silver

Jewels

21j

Frequency

28,800 bph

Power Reserve

71 hours

Year

1973

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