Seiko Cal. 3840 - 815

The Seiko 3840-815 represents an important milestone in Seiko's 1979 lineup. It features a Burgundy dial protected by a Sapphire crystal and offers 170m of water resistance. [seikata-wm-62c9658dbba5]

Also known as: Sportsmatic, Baby Tuna

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

37mm

Case Thickness

12.2mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

170m

Dial Color

Burgundy

Jewels

26j

Frequency

21,600 bph

Power Reserve

61 hours

Year

1979

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