Seiko Cal. 5278 - 730

The Seiko 5278-730 represents an important milestone in Seiko's 1971 lineup. Powered by the 5278 caliber with 28j jewels beating at 36,000 bph, it delivers a 61 hours power reserve. [seikata-wm-745ecf7866a7]

Also known as: Silverwave, Crown

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

35mm

Case Thickness

12.2mm

Lug Width

18mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

40m

Dial Color

Silver

Jewels

28j

Frequency

36,000 bph

Power Reserve

61 hours

Year

1971

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