Seiko Cal. 3840 - 683

The 3840-683 is a sought-after Solar piece from Seiko's golden era. It features a Green dial protected by a Sapphire crystal and offers 110m of water resistance. [seikata-wm-163d6d632f8f]

Also known as: Tuna

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

35mm

Case Thickness

10.8mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

110m

Dial Color

Green

Jewels

26j

Frequency

36,000 bph

Power Reserve

52 hours

Year

1976

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