Seiko Cal. 6641 - 140

The Seiko 6641-140 represents an important milestone in Seiko's 1972 lineup. It features a Green dial protected by a Mineral crystal and offers 190m of water resistance. [seikata-wm-5b5ab735c558]

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

38mm

Case Thickness

12.1mm

Lug Width

20mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

190m

Dial Color

Green

Jewels

23j

Frequency

28,800 bph

Power Reserve

37 hours

Year

1972

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