Seiko Cal. 5648 - 378

This Hand-Winding model from 1968 features a 44mm Titanium case. Powered by the 5648 caliber with 19j jewels beating at 21,600 bph, it delivers a 65 hours power reserve. [seikata-wm-a400a33ed95c]

Also known as: Silverwave, Golden Tuna

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

44mm

Case Thickness

11.0mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

120m

Dial Color

White

Jewels

19j

Frequency

21,600 bph

Power Reserve

65 hours

Year

1968

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