Seiko Cal. 6640 - 509

The 6640-509 is a sought-after Kinetic piece from Seiko's golden era. It features a Cream dial protected by a Mineral crystal and offers 150m of water resistance. [seikata-wm-dbfd5d0497b6]

Also known as: Tuna

Specifications

Movement

Kinetic

Case Material

Titanium

Case Width

42mm

Case Thickness

10.8mm

Lug Width

21mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

150m

Dial Color

Cream

Jewels

30j

Frequency

21,600 bph

Power Reserve

40 hours

Year

1965

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