Seiko Cal. 4576 - 640

The 4576-640 is a sought-after Kinetic piece from Seiko's golden era. Powered by the 4576 caliber with 34j jewels beating at 36,000 bph, it delivers a 70 hours power reserve. [seikata-wm-8e9afcc1ad98]

Also known as: Baby Tuna

Specifications

Movement

Kinetic

Case Material

Two-Tone

Case Width

42mm

Case Thickness

13.4mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

80m

Dial Color

Burgundy

Jewels

34j

Frequency

36,000 bph

Power Reserve

70 hours

Year

1965

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