Seiko Cal. 4440 - 657

The 4440-657 is a sought-after Quartz piece from Seiko's golden era. Powered by the 4440 caliber with 34j jewels beating at 36,000 bph, it delivers a 57 hours power reserve. [seikata-wm-528ea0cf0da9]

Also known as: Helmet, Golden Tuna

Specifications

Movement

Quartz

Case Material

Gold-Plated

Case Width

34mm

Case Thickness

8.4mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

180m

Dial Color

Green

Jewels

34j

Frequency

36,000 bph

Power Reserve

57 hours

Year

1977

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