Seiko Cal. 5650 - 434

This Hand-Winding model from 1973 features a 40mm Hardlex-Coated Steel case. Powered by the 5650 caliber with 23j jewels beating at 21,600 bph, it delivers a 49 hours power reserve. [seikata-wm-df9d5165ca6e]

Also known as: Sumo, Bellmatic

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

40mm

Case Thickness

8.3mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

90m

Dial Color

Blue Sunburst

Jewels

23j

Frequency

21,600 bph

Power Reserve

49 hours

Year

1973

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