Seiko Cal. 3860 - 707

The Seiko 3860-707 represents an important milestone in Seiko's 1969 lineup. Powered by the 3860 caliber with 35j jewels beating at 21,600 bph, it delivers a 70 hours power reserve. [seikata-wm-10829c42a479]

Also known as: Tuna

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

46mm

Case Thickness

10.0mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

180m

Dial Color

Silver

Jewels

35j

Frequency

21,600 bph

Power Reserve

70 hours

Year

1969

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