Seiko Cal. 3873 - 702

The Seiko 3873-702 represents an important milestone in Seiko's 1973 lineup. Powered by the 3873 caliber with 17j jewels beating at 36,000 bph, it delivers a 49 hours power reserve. [seikata-wm-210b2386569b]

Also known as: Tuna

Specifications

Movement

Automatic

Case Material

Gold-Plated

Case Width

40mm

Case Thickness

8.1mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

130m

Dial Color

Silver

Jewels

17j

Frequency

36,000 bph

Power Reserve

49 hours

Year

1973

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