Seiko Cal. 6638 - 345

Seiko 6638-345

The 6638-345 is a sought-after Spring Drive piece from Seiko's golden era. It features a Black dial protected by a Mineral crystal and offers 50m of water resistance. [seikata-wm-5d3572e7a0b4]

Also known as: UFO, Arnie

Specifications

Movement
Spring Drive
Case Material
Stainless Steel
Case Width
43mm
Case Thickness
10.5mm
Lug Width
18mm
Crystal
Mineral
Bezel
Coin-Edge
Water Resistance
50m
Dial Color
Black
Jewels
32j
Frequency
36,000 bph
Power Reserve
58 hours
Year
1971

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