Seiko Cal. 6630 - 840

Seiko 6630-840

The 6630-840 is a sought-after Kinetic piece from Seiko's golden era. Powered by the 6630 caliber with 31j jewels beating at 21,600 bph, it delivers a 51 hours power reserve. [seikata-wm-62c9e07fff5a]

Also known as: World Timer, Golden Tuna

Specifications

Movement
Kinetic
Case Material
Gold-Plated
Case Width
42mm
Case Thickness
8.4mm
Lug Width
18mm
Crystal
Acrylic
Bezel
Rotating
Water Resistance
60m
Dial Color
Silver
Jewels
31j
Frequency
21,600 bph
Power Reserve
51 hours
Year
1969

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