Seiko Cal. 5616 - 427

The 5616-427 is a sought-after Automatic piece from Seiko's golden era. Powered by the 5616 caliber with 24j jewels beating at 21,600 bph, it delivers a 59 hours power reserve. [seikata-wm-bdd1caae20da]

Also known as: Bullhead

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

39mm

Case Thickness

14.1mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

190m

Dial Color

Blue Sunburst

Jewels

24j

Frequency

21,600 bph

Power Reserve

59 hours

Year

1973

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