Seiko Cal. 3863 - 406

The 3863-406 is a sought-after Automatic piece from Seiko's golden era. It features a Silver dial protected by a Acrylic crystal and offers 150m of water resistance. [seikata-wm-ececaabeeaf2]

Also known as: Sportsmatic, Baby Tuna

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

37mm

Case Thickness

14.5mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

150m

Dial Color

Silver

Jewels

20j

Frequency

36,000 bph

Power Reserve

42 hours

Year

1965

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