Seiko Cal. 5647 - 357

This Hand-Winding model from 1991 features a 46mm Two-Tone case. It features a Blue Sunburst dial protected by a Acrylic crystal and offers 50m of water resistance. [seikata-wm-6c2e3b486910]

Also known as: Bullhead, Sportsmatic

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

46mm

Case Thickness

10.9mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

50m

Dial Color

Blue Sunburst

Jewels

24j

Frequency

28,800 bph

Power Reserve

55 hours

Year

1991

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