Seiko Cal. 6320 - 591

The 6320-591 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 6320 caliber with 36j jewels beating at 21,600 bph, it delivers a 36 hours power reserve. [seikata-wm-b1e3954eba64]

Also known as: Sumo

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

42mm

Case Thickness

13.1mm

Lug Width

22mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

90m

Dial Color

Cream

Jewels

36j

Frequency

21,600 bph

Power Reserve

36 hours

Year

1993

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