Seiko Cal. 4557 - 391

The 4557-391 is a sought-after Quartz piece from Seiko's golden era. Powered by the 4557 caliber with 29j jewels beating at 21,600 bph, it delivers a 67 hours power reserve. [seikata-wm-7c3bc3cd8333]

Also known as: Sumo, Navigator

Specifications

Movement

Quartz

Case Material

Titanium

Case Width

39mm

Case Thickness

11.4mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

90m

Dial Color

Burgundy

Jewels

29j

Frequency

21,600 bph

Power Reserve

67 hours

Year

1973

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