Seiko Cal. 5659 - 637

Released in 1971, the Cal. 5659 with design code 637 was part of Seiko's domestic market collection. It features a Green dial protected by a Mineral crystal and offers 190m of water resistance. [seikata-wm-cc15274bd189]

Also known as: Sea Horse, Golden Tuna

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

41mm

Case Thickness

15.8mm

Lug Width

22mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

190m

Dial Color

Green

Jewels

23j

Frequency

28,800 bph

Power Reserve

62 hours

Year

1971

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