Seiko Cal. 5618 - 313

This Hand-Winding model from 1982 features a 40mm Two-Tone case. It features a Navy dial protected by a Mineral crystal and offers 70m of water resistance. [seikata-wm-b31f537b40f2]

Also known as: Rally, Sportsmatic

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

40mm

Case Thickness

15.9mm

Lug Width

21mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

70m

Dial Color

Navy

Jewels

33j

Frequency

36,000 bph

Power Reserve

53 hours

Year

1982

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