Seiko Cal. 6688 - 380

Released in 1971, the Cal. 6688 with design code 380 was part of Seiko's domestic market collection. It features a White dial protected by a Mineral crystal and offers 100m of water resistance. [seikata-wm-cfbf0ed4fda9]

Also known as: Rally, World Timer

Specifications

Movement

Kinetic

Case Material

PVD Black

Case Width

46mm

Case Thickness

9.8mm

Lug Width

20mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

100m

Dial Color

White

Jewels

34j

Frequency

21,600 bph

Power Reserve

63 hours

Year

1971

Related Models

• Seiko 4599-652
• Seiko 6177-937
• Seiko 6643-791
• Seiko 3869-974
• Seiko 6139-231
• Seiko 5664-971
• Seiko 4595-702
• Seiko 6175-607
• Seiko 6327-450
• Seiko 7185-696
• Seiko 5233-621
• Seiko 6284-436