Seiko Cal. 6644 - 457

The Seiko 6644-457 represents an important milestone in Seiko's 1978 lineup. It features a Blue Sunburst dial protected by a Mineral crystal and offers 80m of water resistance. [seikata-wm-e44bcef6530e]

Also known as: Bellmatic

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

43mm

Case Thickness

11.2mm

Lug Width

19mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

80m

Dial Color

Blue Sunburst

Jewels

29j

Frequency

21,600 bph

Power Reserve

43 hours

Year

1978

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