Seiko Cal. 6640 - 386

Seiko 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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