Seiko Cal. 6646 - 384

The Seiko 6646-384 represents an important milestone in Seiko's 1978 lineup. It features a Green dial protected by a Mineral crystal and offers 70m of water resistance. [seikata-wm-15ad15ebb035]

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

45mm

Case Thickness

8.1mm

Lug Width

20mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

70m

Dial Color

Green

Jewels

27j

Frequency

28,800 bph

Power Reserve

37 hours

Year

1978

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