Seiko Cal. 5278 - 399

The Seiko 5278-399 represents an important milestone in Seiko's 1973 lineup. Powered by the 5278 caliber with 34j jewels beating at 28,800 bph, it delivers a 54 hours power reserve. [seikata-wm-4b221af706fc]

Also known as: Monster, Golden Tuna

Specifications

Movement

Solar

Case Material

Gold-Plated

Case Width

34mm

Case Thickness

13.4mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

60m

Dial Color

Silver

Jewels

34j

Frequency

28,800 bph

Power Reserve

54 hours

Year

1973

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