Seiko Cal. 5645 - 667

The Seiko 5645-667 represents an important milestone in Seiko's 1972 lineup. The Bidirectional bezel and 38mm case give it a distinctive presence on the wrist. [seikata-wm-42ac9afe8983]

Also known as: Tuna

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

38mm

Case Thickness

8.1mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

170m

Dial Color

Black

Jewels

19j

Frequency

36,000 bph

Power Reserve

62 hours

Year

1972

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