Seiko Cal. 5641 - 788

The 5641-788 is a sought-after Quartz piece from Seiko's golden era. Powered by the 5641 caliber with 34j jewels beating at 28,800 bph, it delivers a 61 hours power reserve. [seikata-wm-c54071990c2b]

Also known as: Tuna, Baby Tuna

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

39mm

Case Thickness

14.4mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

180m

Dial Color

Champagne

Jewels

34j

Frequency

28,800 bph

Power Reserve

61 hours

Year

1973

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