Seiko Cal. 6640 - 570

The 6640-570 is a sought-after Kinetic piece from Seiko's golden era. The Coin-Edge bezel and 44mm case give it a distinctive presence on the wrist. [seikata-wm-a977e34e13c3]

Also known as: Panda

Specifications

Movement

Kinetic

Case Material

Hardlex-Coated Steel

Case Width

44mm

Case Thickness

9.3mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

60m

Dial Color

Silver

Jewels

31j

Frequency

36,000 bph

Power Reserve

59 hours

Year

1976

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