Seiko Cal. 6646 - 507

Released in 1966, the Cal. 6646 with design code 507 was part of Seiko's domestic market collection. It features a Silver dial protected by a Hardlex crystal and offers 190m of water resistance. [seikata-wm-bf2ca3191ed7]

Also known as: Turtle, Panda

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

41mm

Case Thickness

9.0mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

190m

Dial Color

Silver

Jewels

28j

Frequency

21,600 bph

Power Reserve

37 hours

Year

1966

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