Seiko Cal. 6688 - 377

The 6688-377 is a sought-after Solar piece from Seiko's golden era. Powered by the 6688 caliber with 34j jewels beating at 21,600 bph, it delivers a 41 hours power reserve. [seikata-wm-717881602f08]

Also known as: Sumo

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

36mm

Case Thickness

11.2mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

150m

Dial Color

Burgundy

Jewels

34j

Frequency

21,600 bph

Power Reserve

41 hours

Year

1982

Related Models

• Seiko 5228-755
• Seiko 0742-681
• Seiko 6344-218
• Seiko 6622-764
• Seiko 6394-747
• Seiko 6127-935
• Seiko 0769-637
• Seiko 4453-622
• Seiko 5244-278
• Seiko 6144-991
• Seiko 6217-829
• Seiko 5210-246