Seiko Cal. 4436 - 188

The 4436-188 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 4436 caliber with 24j jewels beating at 36,000 bph, it delivers a 36 hours power reserve. [seikata-wm-1b1f63de7da7]

Also known as: Bullhead, Sportsmatic

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

42mm

Case Thickness

10.8mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

70m

Dial Color

Blue Sunburst

Jewels

24j

Frequency

36,000 bph

Power Reserve

36 hours

Year

1970

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