Seiko Cal. 4440 - 510

The 4440-510 is a sought-after Spring Drive piece from Seiko's golden era. With its 22mm lug width and 13.4mm profile, it sits comfortably on most wrists. [seikata-wm-3e636a705865]

Also known as: Baby Tuna, Emperor

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

42mm

Case Thickness

13.4mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

160m

Dial Color

Black

Jewels

18j

Frequency

36,000 bph

Power Reserve

39 hours

Year

1966

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