Seiko Cal. 5689 - 337

Released in 1973, the Cal. 5689 with design code 337 was part of Seiko's domestic market collection. It features a Navy dial protected by a Hardlex crystal and offers 40m of water resistance. [seikata-wm-e9f02ec32bb2]

Also known as: Sumo

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

42mm

Case Thickness

12.2mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

40m

Dial Color

Navy

Jewels

23j

Frequency

36,000 bph

Power Reserve

48 hours

Year

1973

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