Seiko Cal. 3877 - 345

The Seiko 3877-345 represents an important milestone in Seiko's 1980 lineup. Powered by the 3877 caliber with 27j jewels beating at 28,800 bph, it delivers a 50 hours power reserve. [seikata-wm-bf6e59ae41a4]

Also known as: UFO, Silverwave

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

45mm

Case Thickness

9.9mm

Lug Width

19mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

140m

Dial Color

Black

Jewels

27j

Frequency

28,800 bph

Power Reserve

50 hours

Year

1980

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