Seiko Cal. 7178 - 740

The Seiko 7178-740 represents an important milestone in Seiko's 1975 lineup. It features a Champagne dial protected by a Sapphire crystal and offers 120m of water resistance. [seikata-wm-2807115ff0c0]

Also known as: Bellmatic

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

37mm

Case Thickness

12.1mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

120m

Dial Color

Champagne

Jewels

35j

Frequency

36,000 bph

Power Reserve

63 hours

Year

1975

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