Seiko Cal. 4552 - 916

The Seiko 4552-916 represents an important milestone in Seiko's 1971 lineup. The Bidirectional bezel and 45mm case give it a distinctive presence on the wrist. [seikata-wm-3ed297488410]

Also known as: Helmet

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

45mm

Case Thickness

15.5mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

90m

Dial Color

Black

Jewels

17j

Frequency

36,000 bph

Power Reserve

38 hours

Year

1971

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