Seiko Cal. 5618 - 646

The 5618-646 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 5618 caliber with 31j jewels beating at 28,800 bph, it delivers a 70 hours power reserve. [seikata-wm-81050bfcf8c7]

Also known as: Flighty

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

34mm

Case Thickness

10.7mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

140m

Dial Color

Navy

Jewels

31j

Frequency

28,800 bph

Power Reserve

70 hours

Year

1972

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