Seiko Cal. 3820 - 877

The Seiko 3820-877 represents an important milestone in Seiko's 1981 lineup. Powered by the 3820 caliber with 21j jewels beating at 36,000 bph, it delivers a 58 hours power reserve. [seikata-wm-a9df62fef09c]

Also known as: Turtle, Tuna

Specifications

Movement

Automatic

Case Material

Gold-Plated

Case Width

45mm

Case Thickness

13.6mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

30m

Dial Color

Green

Jewels

21j

Frequency

36,000 bph

Power Reserve

58 hours

Year

1981

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