Seiko Cal. 6320 - 257

The Seiko 6320-257 represents an important milestone in Seiko's 1965 lineup. Powered by the 6320 caliber with 34j jewels beating at 36,000 bph, it delivers a 71 hours power reserve. [seikata-wm-c4f359e94706]

Also known as: Goldfeather

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

43mm

Case Thickness

12.9mm

Lug Width

21mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

30m

Dial Color

Black

Jewels

34j

Frequency

36,000 bph

Power Reserve

71 hours

Year

1965

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