Seiko Cal. 6166 - 720

The 6166-720 is a sought-after Spring Drive piece from Seiko's golden era. It features a Black dial protected by a Sapphire crystal and offers 130m of water resistance. [seikata-wm-23884f265567]

Also known as: Bellmatic

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

41mm

Case Thickness

12.7mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

130m

Dial Color

Black

Jewels

36j

Frequency

36,000 bph

Power Reserve

54 hours

Year

1972

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