Seiko Cal. 6645 - 367

This Spring Drive model from 1966 features a 37mm Hardlex-Coated Steel case. It features a Green dial protected by a Mineral crystal and offers 90m of water resistance. [seikata-wm-d210790c8543]

Also known as: Panda, Helmet

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

37mm

Case Thickness

14.8mm

Lug Width

19mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

90m

Dial Color

Green

Jewels

27j

Frequency

28,800 bph

Power Reserve

61 hours

Year

1966

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