Seiko Cal. 5644 - 155

This Hand-Winding model from 1996 features a 42mm Stainless Steel case. Powered by the 5644 caliber with 34j jewels beating at 28,800 bph, it delivers a 36 hours power reserve. [seikata-wm-625ffae6e631]

Also known as: Tuna, Crown

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

42mm

Case Thickness

9.7mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

180m

Dial Color

Silver

Jewels

34j

Frequency

28,800 bph

Power Reserve

36 hours

Year

1996

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