Seiko Cal. 6645 - 137

The 6645-137 is a sought-after Kinetic piece from Seiko's golden era. The Coin-Edge bezel and 35mm case give it a distinctive presence on the wrist. [seikata-wm-f8bf0ed3f4f3]

Also known as: Monster, World Timer

Specifications

Movement

Kinetic

Case Material

Titanium

Case Width

35mm

Case Thickness

15.4mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

170m

Dial Color

Green

Jewels

23j

Frequency

21,600 bph

Power Reserve

50 hours

Year

1997

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