Seiko Cal. 3860 - 277

The Seiko 3860-277 represents an important milestone in Seiko's 1965 lineup. With its 19mm lug width and 11.5mm profile, it sits comfortably on most wrists. [seikata-wm-b04baf7f40c0]

Also known as: Sumo

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

45mm

Case Thickness

11.5mm

Lug Width

19mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

60m

Dial Color

White

Jewels

29j

Frequency

36,000 bph

Power Reserve

65 hours

Year

1965

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