Seiko Cal. 6641 - 588

Released in 1969, the Cal. 6641 with design code 588 was part of Seiko's domestic market collection. It features a Blue Sunburst dial protected by a Mineral crystal and offers 140m of water resistance. [seikata-wm-3ace05db2edb]

Also known as: Monster, Crown

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

37mm

Case Thickness

14.0mm

Lug Width

19mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

140m

Dial Color

Blue Sunburst

Jewels

34j

Frequency

28,800 bph

Power Reserve

51 hours

Year

1969

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