Seiko Cal. 6644 - 623

The 6644-623 is a sought-after Quartz piece from Seiko's golden era. Powered by the 6644 caliber with 36j jewels beating at 36,000 bph, it delivers a 36 hours power reserve. [seikata-wm-fb0d22df0287]

Also known as: Monster, Panda

Specifications

Movement

Quartz

Case Material

Stainless Steel

Case Width

38mm

Case Thickness

9.0mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

110m

Dial Color

Blue Sunburst

Jewels

36j

Frequency

36,000 bph

Power Reserve

36 hours

Year

1976

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