Seiko Cal. 3898 - 391

Released in 1978, the Cal. 3898 with design code 391 was part of Seiko's domestic market collection. Powered by the 3898 caliber with 24j jewels beating at 21,600 bph, it delivers a 50 hours power reserve. [seikata-wm-77ba07fee1ce]

Also known as: Tuna, Sea Horse

Specifications

Movement

Kinetic

Case Material

Two-Tone

Case Width

46mm

Case Thickness

8.0mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

100m

Dial Color

Navy

Jewels

24j

Frequency

21,600 bph

Power Reserve

50 hours

Year

1978

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