Seiko Cal. 6661 - 977

This Hand-Winding model from 1965 features a 44mm PVD Black case. It features a Cream dial protected by a Mineral crystal and offers 110m of water resistance. [seikata-wm-972c0396266d]

Also known as: Helmet, Bellmatic

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

44mm

Case Thickness

10.2mm

Lug Width

21mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

110m

Dial Color

Cream

Jewels

29j

Frequency

21,600 bph

Power Reserve

57 hours

Year

1965

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