Seiko Cal. 3877 - 973

The 3877-973 is a sought-after Automatic piece from Seiko's golden era. Powered by the 3877 caliber with 29j jewels beating at 36,000 bph, it delivers a 52 hours power reserve. [seikata-wm-c1c9bb4910ba]

Also known as: Tuna

Specifications

Movement

Automatic

Case Material

Stainless Steel

Case Width

38mm

Case Thickness

11.0mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

170m

Dial Color

Black

Jewels

29j

Frequency

36,000 bph

Power Reserve

52 hours

Year

1968

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