Seiko Cal. 6618 - 257

The 6618-257 is a sought-after Spring Drive piece from Seiko's golden era. It features a White dial protected by a Acrylic crystal and offers 140m of water resistance. [seikata-wm-0106498826fe]

Also known as: Bellmatic

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

39mm

Case Thickness

11.2mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

140m

Dial Color

White

Jewels

18j

Frequency

28,800 bph

Power Reserve

50 hours

Year

1975

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