Seiko Cal. 6618 - 991

Released in 1993, the Cal. 6618 with design code 991 was part of Seiko's domestic market collection. It features a Silver dial protected by a Mineral crystal and offers 90m of water resistance. [seikata-wm-9829cbce3aa3]

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

40mm

Case Thickness

11.1mm

Lug Width

19mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

90m

Dial Color

Silver

Jewels

35j

Frequency

28,800 bph

Power Reserve

70 hours

Year

1993

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