Seiko Cal. 4518 - 397

Released in 1968, the Cal. 4518 with design code 397 was part of Seiko's domestic market collection. Powered by the 4518 caliber with 24j jewels beating at 36,000 bph, it delivers a 64 hours power reserve. [seikata-wm-a2c574f3f411]

Also known as: Sumo, Arnie

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

41mm

Case Thickness

11.6mm

Lug Width

22mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

40m

Dial Color

Green

Jewels

24j

Frequency

36,000 bph

Power Reserve

64 hours

Year

1968

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