Seiko Cal. 6642 - 344

The Seiko 6642-344 represents an important milestone in Seiko's 1966 lineup. It features a Green dial protected by a Mineral crystal and offers 130m of water resistance. [seikata-wm-6cad84da52be]

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

41mm

Case Thickness

9.6mm

Lug Width

20mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

130m

Dial Color

Green

Jewels

20j

Frequency

28,800 bph

Power Reserve

38 hours

Year

1966

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