Seiko Cal. 6644 - 237

The 6644-237 is a sought-after Quartz piece from Seiko's golden era. The Bidirectional bezel and 46mm case give it a distinctive presence on the wrist. [seikata-wm-3a792f53265d]

Also known as: Helmet, Emperor

Specifications

Movement

Quartz

Case Material

Stainless Steel

Case Width

46mm

Case Thickness

14.9mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

90m

Dial Color

Navy

Jewels

21j

Frequency

28,800 bph

Power Reserve

56 hours

Year

1975

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