Seiko Cal. 6353 - 257

The 6353-257 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 6353 caliber with 17j jewels beating at 28,800 bph, it delivers a 60 hours power reserve. [seikata-wm-abfd4478b512]

Also known as: Sumo, Baby Tuna

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

45mm

Case Thickness

12.6mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

40m

Dial Color

Black

Jewels

17j

Frequency

28,800 bph

Power Reserve

60 hours

Year

1979

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