Seiko Cal. 3877 - 636

Seiko 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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