Seiko Cal. 4555 - 630

The 4555-630 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 4555 caliber with 19j jewels beating at 36,000 bph, it delivers a 49 hours power reserve. [seikata-wm-4279f36545b4]

Also known as: Baby Tuna, Arnie

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

38mm

Case Thickness

14.0mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

110m

Dial Color

Navy

Jewels

19j

Frequency

36,000 bph

Power Reserve

49 hours

Year

1966

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