Seiko Cal. 3860 - 443

The 3860-443 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 3860 caliber with 24j jewels beating at 21,600 bph, it delivers a 58 hours power reserve. [seikata-wm-20d27e408eb5]

Also known as: Turtle, Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

39mm

Case Thickness

8.7mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

200m

Dial Color

Black

Jewels

24j

Frequency

21,600 bph

Power Reserve

58 hours

Year

1971

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