Seiko Cal. 3878 - 633

Seiko 3878-633

The 3878-633 is a sought-after Automatic piece from Seiko's golden era. Powered by the 3878 caliber with 24j jewels beating at 28,800 bph, it delivers a 50 hours power reserve. [seikata-wm-d1732af309b5]

Also known as: Turtle

Specifications

Movement
Automatic
Case Material
Stainless Steel
Case Width
37mm
Case Thickness
9.2mm
Lug Width
18mm
Crystal
Sapphire
Bezel
Rotating
Water Resistance
40m
Dial Color
White
Jewels
24j
Frequency
28,800 bph
Power Reserve
50 hours
Year
1972

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