Seiko Cal. 3870 - 727

The Seiko 3870-727 represents an important milestone in Seiko's 1988 lineup. Powered by the 3870 caliber with 17j jewels beating at 36,000 bph, it delivers a 48 hours power reserve. [seikata-wm-3892106eca09]

Also known as: Golden Tuna

Specifications

Movement

Automatic

Case Material

Gold-Plated

Case Width

40mm

Case Thickness

8.1mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

80m

Dial Color

Champagne

Jewels

17j

Frequency

36,000 bph

Power Reserve

48 hours

Year

1988

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