Seiko Cal. 3877 - 636

The 3877-636 is a sought-after Quartz piece from Seiko's golden era. Powered by the 3877 caliber with 31j jewels beating at 28,800 bph, it delivers a 49 hours power reserve. [seikata-wm-1409b96eacf2]

Also known as: Turtle, Rally

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

40mm

Case Thickness

15.1mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

150m

Dial Color

Champagne

Jewels

31j

Frequency

28,800 bph

Power Reserve

49 hours

Year

1981

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