Seiko Cal. 6657 - 294

The Seiko 6657-294 represents an important milestone in Seiko's 1976 lineup. It features a Black dial protected by a Mineral crystal and offers 40m of water resistance. [seikata-wm-082cdcf59b79]

Also known as: Silverwave, Bellmatic

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

41mm

Case Thickness

13.4mm

Lug Width

20mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

40m

Dial Color

Black

Jewels

36j

Frequency

21,600 bph

Power Reserve

45 hours

Year

1976

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