Seiko Cal. 3870 - 105

The 3870-105 is a sought-after Automatic piece from Seiko's golden era. Powered by the 3870 caliber with 26j jewels beating at 28,800 bph, it delivers a 58 hours power reserve. [seikata-wm-f9b8be17949c]

Also known as: Navigator

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

34mm

Case Thickness

15.5mm

Lug Width

19mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

40m

Dial Color

Green

Jewels

26j

Frequency

28,800 bph

Power Reserve

58 hours

Year

1974

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