Seiko Cal. 6645 - 370

The 6645-370 is a sought-after Solar piece from Seiko's golden era. With its 21mm lug width and 15.2mm profile, it sits comfortably on most wrists. [seikata-wm-b2511cd1d149]

Also known as: UFO

Specifications

Movement

Solar

Case Material

Titanium

Case Width

43mm

Case Thickness

15.2mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

100m

Dial Color

Black

Jewels

22j

Frequency

21,600 bph

Power Reserve

38 hours

Year

1979

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