Seiko Cal. 5616 - 433

The 5616-433 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 5616 caliber with 24j jewels beating at 21,600 bph, it delivers a 57 hours power reserve. [seikata-wm-c0b8be92cd9b]

Also known as: Sumo

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

40mm

Case Thickness

14.5mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

40m

Dial Color

Silver

Jewels

24j

Frequency

21,600 bph

Power Reserve

57 hours

Year

1979

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