Seiko Cal. 3877 - 991

The 3877-991 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 3877 caliber with 25j jewels beating at 21,600 bph, it delivers a 46 hours power reserve. [seikata-wm-e94611d8697a]

Also known as: Navigator

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

39mm

Case Thickness

9.8mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

120m

Dial Color

White

Jewels

25j

Frequency

21,600 bph

Power Reserve

46 hours

Year

1998

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