Seiko Cal. 3850 - 638

Seiko 3850-638

The 3850-638 is a sought-after Kinetic piece from Seiko's golden era. Powered by the 3850 caliber with 30j jewels beating at 36,000 bph, it delivers a 48 hours power reserve. [seikata-wm-52b714663c27]

Also known as: Bullhead

Specifications

Movement
Kinetic
Case Material
PVD Black
Case Width
40mm
Case Thickness
12.4mm
Lug Width
20mm
Crystal
Mineral
Bezel
Fixed
Water Resistance
170m
Dial Color
Champagne
Jewels
30j
Frequency
36,000 bph
Power Reserve
48 hours
Year
1977

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seikata-wm-52b714663c27