Seiko Cal. 6645 - 869

The 6645-869 is a sought-after Quartz piece from Seiko's golden era. The Inner Rotating bezel and 36mm case give it a distinctive presence on the wrist. [seikata-wm-d7ed51930cbe]

Also known as: Sumo, Tuna

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

36mm

Case Thickness

12.4mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

120m

Dial Color

Silver

Jewels

22j

Frequency

36,000 bph

Power Reserve

39 hours

Year

1968

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