Seiko Cal. 6644 - 731

The 6644-731 is a sought-after Kinetic piece from Seiko's golden era. It features a Black dial protected by a Mineral crystal and offers 90m of water resistance. [seikata-wm-42191d725144]

Also known as: Panda

Specifications

Movement

Kinetic

Case Material

Stainless Steel

Case Width

38mm

Case Thickness

8.1mm

Lug Width

21mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

90m

Dial Color

Black

Jewels

21j

Frequency

21,600 bph

Power Reserve

41 hours

Year

1992

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