Seiko Cal. 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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