Seiko Cal. 3877 - 178

The 3877-178 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 3877 caliber with 25j jewels beating at 28,800 bph, it delivers a 49 hours power reserve. [seikata-wm-09499f09bcb5]

Also known as: Helmet

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

39mm

Case Thickness

10.0mm

Lug Width

20mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

50m

Dial Color

Blue Sunburst

Jewels

25j

Frequency

28,800 bph

Power Reserve

49 hours

Year

1989

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