Seiko Cal. 6689 - 233

The Seiko 6689-233 represents an important milestone in Seiko's 1968 lineup. It features a Silver dial protected by a Sapphire crystal and offers 160m of water resistance. [seikata-wm-70264267b1d4]

Also known as: Tuna

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

37mm

Case Thickness

13.1mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

160m

Dial Color

Silver

Jewels

22j

Frequency

28,800 bph

Power Reserve

37 hours

Year

1968

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