Seiko Cal. 3828 - 633

Seiko 3828-633

The 3828-633 is a sought-after Automatic piece from Seiko's golden era. Powered by the 3828 caliber with 20j jewels beating at 36,000 bph, it delivers a 64 hours power reserve. [seikata-wm-e0ccd79ba4f9]

Also known as: Samurai, Bullhead

Specifications

Movement
Automatic
Case Material
Two-Tone
Case Width
37mm
Case Thickness
13.7mm
Lug Width
20mm
Crystal
Sapphire
Bezel
Fixed
Water Resistance
150m
Dial Color
Navy
Jewels
20j
Frequency
36,000 bph
Power Reserve
64 hours
Year
1973

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