Seiko Cal. 4550 - 635

The Seiko 4550-635 represents an important milestone in Seiko's 1970 lineup. It features a Navy dial protected by a Sapphire crystal and offers 130m of water resistance. [seikata-wm-45d3d0961611]

Also known as: Sea Horse, Golden Tuna

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

43mm

Case Thickness

8.6mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

130m

Dial Color

Navy

Jewels

22j

Frequency

21,600 bph

Power Reserve

40 hours

Year

1970

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