Seiko Cal. 3866 - 523

The Seiko 3866-523 represents an important milestone in Seiko's 1985 lineup. Powered by the 3866 caliber with 24j jewels beating at 28,800 bph, it delivers a 36 hours power reserve. [seikata-wm-3a0c60e0a989]

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

36mm

Case Thickness

8.2mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

80m

Dial Color

Navy

Jewels

24j

Frequency

28,800 bph

Power Reserve

36 hours

Year

1985

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