Seiko Cal. 6616 - 765

This Solar model from 1970 features a 38mm Hardlex-Coated Steel case. It features a Navy dial protected by a Acrylic crystal and offers 180m of water resistance. [seikata-wm-4f1c797a3c8d]

Also known as: Sumo, Helmet

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

38mm

Case Thickness

8.7mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

180m

Dial Color

Navy

Jewels

22j

Frequency

21,600 bph

Power Reserve

50 hours

Year

1970

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