Seiko Cal. 4436 - 863

Released in 1965, the Cal. 4436 with design code 863 was part of Seiko's domestic market collection. Powered by the 4436 caliber with 24j jewels beating at 21,600 bph, it delivers a 70 hours power reserve. [seikata-wm-320dd0805abc]

Also known as: Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

37mm

Case Thickness

13.6mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

110m

Dial Color

Blue Sunburst

Jewels

24j

Frequency

21,600 bph

Power Reserve

70 hours

Year

1965

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