Seiko Cal. 4550 - 510

The 4550-510 is a sought-after Kinetic piece from Seiko's golden era. Powered by the 4550 caliber with 31j jewels beating at 21,600 bph, it delivers a 38 hours power reserve. [seikata-wm-dd1545a79de8]

Also known as: Golden Tuna, Baby Tuna

Specifications

Movement

Kinetic

Case Material

Hardlex-Coated Steel

Case Width

44mm

Case Thickness

15.8mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

150m

Dial Color

Black

Jewels

31j

Frequency

21,600 bph

Power Reserve

38 hours

Year

1968

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