Seiko Cal. 5646 - 997

The Seiko 5646-997 represents an important milestone in Seiko's 1978 lineup. It features a Black dial protected by a Mineral crystal and offers 60m of water resistance. [seikata-wm-3b7338e38a00]

Also known as: Pogue, Crown

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

41mm

Case Thickness

9.6mm

Lug Width

21mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

60m

Dial Color

Black

Jewels

28j

Frequency

28,800 bph

Power Reserve

70 hours

Year

1978

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