Seiko Cal. 6688 - 641

The Seiko 6688-641 represents an important milestone in Seiko's 1981 lineup. The Coin-Edge bezel and 43mm case give it a distinctive presence on the wrist. [seikata-wm-5f1cd5ea598b]

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

43mm

Case Thickness

11.5mm

Lug Width

20mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

100m

Dial Color

Champagne

Jewels

28j

Frequency

36,000 bph

Power Reserve

41 hours

Year

1981

Related Models

• Seiko 4552-172
• Seiko 7138-781
• Seiko 6654-446
• Seiko 3899-982
• Seiko 3896-773
• Seiko 6125-156
• Seiko 5242-161
• Seiko 5644-414
• Seiko 0756-752
• Seiko 4543-437
• Seiko 6685-964
• Seiko 3864-991