Seiko Cal. 6657 - 984

This Hand-Winding model from 1989 features a 36mm Titanium case. Powered by the 6657 caliber with 35j jewels beating at 36,000 bph, it delivers a 52 hours power reserve. [seikata-wm-f0868593a1f8]

Also known as: Tuna

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

36mm

Case Thickness

13.0mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

120m

Dial Color

White

Jewels

35j

Frequency

36,000 bph

Power Reserve

52 hours

Year

1989

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