Seiko Cal. 5641 - 646

The 5641-646 is a sought-after Quartz piece from Seiko's golden era. Powered by the 5641 caliber with 31j jewels beating at 28,800 bph, it delivers a 70 hours power reserve. [seikata-wm-10ce28e58869]

Also known as: Golden Tuna, Arnie

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

42mm

Case Thickness

13.2mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

200m

Dial Color

Green

Jewels

31j

Frequency

28,800 bph

Power Reserve

70 hours

Year

1989

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