Seiko Cal. 6660 - 916

The 6660-916 is a sought-after Hand-Winding piece from Seiko's golden era. The Bidirectional bezel and 34mm case give it a distinctive presence on the wrist. [seikata-wm-fc2fd14ce102]

Also known as: Bellmatic

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

34mm

Case Thickness

13.8mm

Lug Width

22mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

180m

Dial Color

Navy

Jewels

25j

Frequency

28,800 bph

Power Reserve

66 hours

Year

1965

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