Seiko Cal. 6657 - 508

This Hand-Winding model from 1995 features a 40mm Titanium case. Powered by the 6657 caliber with 22j jewels beating at 36,000 bph, it delivers a 71 hours power reserve. [seikata-wm-64f20e778d89]

Also known as: Bellmatic, Crown

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

40mm

Case Thickness

12.7mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

160m

Dial Color

Blue Sunburst

Jewels

22j

Frequency

36,000 bph

Power Reserve

71 hours

Year

1995

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