Seiko Cal. 6688 - 378

The 6688-378 is a sought-after Automatic piece from Seiko's golden era. It features a Burgundy dial protected by a Mineral crystal and offers 70m of water resistance. [seikata-wm-0f4fe574aa69]

Also known as: Helmet, Navigator

Specifications

Movement

Automatic

Case Material

Gold-Plated

Case Width

43mm

Case Thickness

14.8mm

Lug Width

22mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

70m

Dial Color

Burgundy

Jewels

26j

Frequency

36,000 bph

Power Reserve

49 hours

Year

1989

Related Models

• Seiko 0722-764
• Seiko 4559-117
• Seiko 6355-591
• Seiko 4559-882
• Seiko 5299-617
• Seiko 6376-291
• Seiko 5283-814
• Seiko 0758-616
• Seiko 4468-262
• Seiko 6193-970
• Seiko 3824-151
• Seiko 6134-627