Seiko Cal. 6618 - 309

Seiko 6618-309

The 6618-309 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 6618 caliber with 25j jewels beating at 36,000 bph, it delivers a 50 hours power reserve. [seikata-wm-7c0590449a37]

Also known as: Baby Tuna

Specifications

Movement
Spring Drive
Case Material
PVD Black
Case Width
38mm
Case Thickness
15.6mm
Lug Width
20mm
Crystal
Acrylic
Bezel
Fixed
Water Resistance
40m
Dial Color
Burgundy
Jewels
25j
Frequency
36,000 bph
Power Reserve
50 hours
Year
1979

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seikata-wm-7c0590449a37