Seiko Cal. 6321 - 557

The 6321-557 is a sought-after Hand-Winding piece from Seiko's golden era. It features a Navy dial protected by a Mineral crystal and offers 140m of water resistance. [seikata-wm-4dff432e26f6]

Also known as: Samurai

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

43mm

Case Thickness

9.2mm

Lug Width

21mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

140m

Dial Color

Navy

Jewels

27j

Frequency

36,000 bph

Power Reserve

60 hours

Year

1978

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