Seiko Cal. 5647 - 790

The 5647-790 is a sought-after Hand-Winding piece from Seiko's golden era. It features a Blue Sunburst dial protected by a Sapphire crystal and offers 200m of water resistance. [seikata-wm-e639e96fe851]

Also known as: Bellmatic

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

44mm

Case Thickness

13.7mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

200m

Dial Color

Blue Sunburst

Jewels

21j

Frequency

36,000 bph

Power Reserve

37 hours

Year

1979

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