Seiko Cal. 3857 - 741

The 3857-741 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 3857 caliber with 24j jewels beating at 21,600 bph, it delivers a 51 hours power reserve. [seikata-wm-814aa5ff537c]

Also known as: Navigator, Sea Horse

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

44mm

Case Thickness

14.8mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

50m

Dial Color

Blue Sunburst

Jewels

24j

Frequency

21,600 bph

Power Reserve

51 hours

Year

1978

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