Seiko Cal. 6618 - 310

This Spring Drive model from 1978 features a 42mm Two-Tone case. Powered by the 6618 caliber with 23j jewels beating at 21,600 bph, it delivers a 70 hours power reserve. [seikata-wm-867ab69b4eaa]

Also known as: World Timer, Emperor

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

42mm

Case Thickness

13.4mm

Lug Width

22mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

80m

Dial Color

Burgundy

Jewels

23j

Frequency

21,600 bph

Power Reserve

70 hours

Year

1978

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