Seiko Cal. 3857 - 670

The Seiko 3857-670 represents an important milestone in Seiko's 1974 lineup. Powered by the 3857 caliber with 17j jewels beating at 28,800 bph, it delivers a 65 hours power reserve. [seikata-wm-a3178fe95205]

Also known as: UFO, Sportsmatic

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

37mm

Case Thickness

10.6mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

190m

Dial Color

Burgundy

Jewels

17j

Frequency

28,800 bph

Power Reserve

65 hours

Year

1974

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