Seiko Cal. 5646 - 738

The Seiko 5646-738 represents an important milestone in Seiko's 1997 lineup. It features a Black dial protected by a Sapphire crystal and offers 190m of water resistance. [seikata-wm-f447cd81dfed]

Also known as: Monster, Bellmatic

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

35mm

Case Thickness

9.2mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

190m

Dial Color

Black

Jewels

32j

Frequency

21,600 bph

Power Reserve

70 hours

Year

1997

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