Seiko Cal. 5644 - 741

The 5644-741 is a sought-after Quartz piece from Seiko's golden era. It features a White dial protected by a Hardlex crystal and offers 40m of water resistance. [seikata-wm-a89731a8e23d]

Also known as: Rally, Baby Tuna

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

37mm

Case Thickness

9.7mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

40m

Dial Color

White

Jewels

36j

Frequency

21,600 bph

Power Reserve

69 hours

Year

1987

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