Seiko Cal. 6688 - 507

Released in 1972, the Cal. 6688 with design code 507 was part of Seiko's domestic market collection. It features a Silver dial protected by a Mineral crystal and offers 40m of water resistance. [seikata-wm-fa997984cf87]

Also known as: Baby Tuna

Specifications

Movement

Kinetic

Case Material

Gold-Plated

Case Width

45mm

Case Thickness

10.3mm

Lug Width

20mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

40m

Dial Color

Silver

Jewels

20j

Frequency

21,600 bph

Power Reserve

54 hours

Year

1972

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