Seiko Cal. 6657 - 662

The Seiko 6657-662 represents an important milestone in Seiko's 1983 lineup. It features a White dial protected by a Sapphire crystal and offers 160m of water resistance. [seikata-wm-75a52256d613]

Also known as: Helmet

Specifications

Movement

Kinetic

Case Material

Hardlex-Coated Steel

Case Width

43mm

Case Thickness

9.5mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

160m

Dial Color

White

Jewels

28j

Frequency

36,000 bph

Power Reserve

55 hours

Year

1983

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