Seiko Cal. 5610 - 688

This Spring Drive model from 1965 features a 35mm Two-Tone case. It features a Navy dial protected by a Sapphire crystal and offers 150m of water resistance. [seikata-wm-6955c0579c43]

Also known as: Baby Tuna

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

35mm

Case Thickness

13.2mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

150m

Dial Color

Navy

Jewels

17j

Frequency

36,000 bph

Power Reserve

71 hours

Year

1965

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