Seiko Cal. 5691 - 988

The 5691-988 is a sought-after Hand-Winding piece from Seiko's golden era. It features a Cream dial protected by a Hardlex crystal and offers 150m of water resistance. [seikata-wm-afa4dd4614a0]

Also known as: Sportsmatic, Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

40mm

Case Thickness

10.9mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

150m

Dial Color

Cream

Jewels

21j

Frequency

21,600 bph

Power Reserve

56 hours

Year

1989

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