Seiko Cal. 6657 - 446

The Seiko 6657-446 represents an important milestone in Seiko's 1983 lineup. It features a Green dial protected by a Mineral crystal and offers 190m of water resistance. [seikata-wm-8dd1e9973f36]

Also known as: World Timer

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

38mm

Case Thickness

8.0mm

Lug Width

21mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

190m

Dial Color

Green

Jewels

23j

Frequency

36,000 bph

Power Reserve

61 hours

Year

1983

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