Seiko Cal. 3880 - 166

The Seiko 3880-166 represents an important milestone in Seiko's 1973 lineup. Powered by the 3880 caliber with 25j jewels beating at 36,000 bph, it delivers a 54 hours power reserve. [seikata-wm-ef08eea1b8f9]

Also known as: Sportsmatic, Crown

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

35mm

Case Thickness

12.4mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

120m

Dial Color

White

Jewels

25j

Frequency

36,000 bph

Power Reserve

54 hours

Year

1973

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