Seiko Cal. 5633 - 677

Released in 1966, the Cal. 5633 with design code 677 was part of Seiko's domestic market collection. It features a Cream dial protected by a Sapphire crystal and offers 50m of water resistance. [seikata-wm-cebf0163db3b]

Also known as: Sea Horse, Baby Tuna

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

39mm

Case Thickness

12.6mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

50m

Dial Color

Cream

Jewels

29j

Frequency

28,800 bph

Power Reserve

57 hours

Year

1966

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