Seiko Cal. 4560 - 618

Seiko 4560-618

The Seiko 4560-618 represents an important milestone in Seiko's 1982 lineup. Powered by the 4560 caliber with 20j jewels beating at 28,800 bph, it delivers a 71 hours power reserve. [seikata-wm-83fe3954e82f]

Also known as: Helmet, Baby Tuna

Specifications

Movement
Spring Drive
Case Material
Hardlex-Coated Steel
Case Width
46mm
Case Thickness
15.3mm
Lug Width
22mm
Crystal
Sapphire
Bezel
Coin-Edge
Water Resistance
110m
Dial Color
Navy
Jewels
20j
Frequency
28,800 bph
Power Reserve
71 hours
Year
1982

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