Seiko Cal. 5640 - 857

This Hand-Winding model from 1979 features a 38mm Titanium case. Powered by the 5640 caliber with 32j jewels beating at 36,000 bph, it delivers a 57 hours power reserve. [seikata-wm-10e5523c25e6]

Also known as: Silverwave, Goldfeather

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

38mm

Case Thickness

13.0mm

Lug Width

20mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

190m

Dial Color

Burgundy

Jewels

32j

Frequency

36,000 bph

Power Reserve

57 hours

Year

1979

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