Seiko Cal. 6618 - 900

Released in 1991, the Cal. 6618 with design code 900 was part of Seiko's domestic market collection. It features a Green dial protected by a Sapphire crystal and offers 40m of water resistance. [seikata-wm-5acaba2ced4b]

Also known as: Tuna, Rally

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

34mm

Case Thickness

11.2mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

40m

Dial Color

Green

Jewels

34j

Frequency

36,000 bph

Power Reserve

60 hours

Year

1991

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