Seiko Cal. 6645 - 770

The 6645-770 is a sought-after Automatic piece from Seiko's golden era. It features a Green dial protected by a Sapphire crystal and offers 160m of water resistance. [seikata-wm-f8eb0a091c05]

Also known as: UFO

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

44mm

Case Thickness

9.7mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

160m

Dial Color

Green

Jewels

22j

Frequency

28,800 bph

Power Reserve

46 hours

Year

1987

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