Seiko Cal. 5646 - 783

This Solar model from 1982 features a 43mm Titanium case. The Coin-Edge bezel and 43mm case give it a distinctive presence on the wrist. [seikata-wm-d8a0fdeb418a]

Also known as: Tuna, Helmet

Specifications

Movement

Solar

Case Material

Titanium

Case Width

43mm

Case Thickness

9.8mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

40m

Dial Color

Navy

Jewels

24j

Frequency

21,600 bph

Power Reserve

41 hours

Year

1982

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