Seiko Cal. 6640 - 386

The Seiko 6640-386 represents an important milestone in Seiko's 1972 lineup. It features a Silver dial protected by a Mineral crystal and offers 30m of water resistance. [seikata-wm-529d644a783a]

Also known as: Panda, Baby Tuna

Specifications

Movement

Kinetic

Case Material

Stainless Steel

Case Width

42mm

Case Thickness

14.1mm

Lug Width

20mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

30m

Dial Color

Silver

Jewels

30j

Frequency

21,600 bph

Power Reserve

38 hours

Year

1972

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