Seiko Cal. 3866 - 508

The 3866-508 is a sought-after Quartz piece from Seiko's golden era. Powered by the 3866 caliber with 20j jewels beating at 36,000 bph, it delivers a 37 hours power reserve. [seikata-wm-4447043990b7]

Also known as: Bellmatic, Baby Tuna

Specifications

Movement

Quartz

Case Material

Gold-Plated

Case Width

36mm

Case Thickness

12.5mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

170m

Dial Color

Champagne

Jewels

20j

Frequency

36,000 bph

Power Reserve

37 hours

Year

1976

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