Seiko Cal. 6646 - 770

The Seiko 6646-770 represents an important milestone in Seiko's 1988 lineup. The Coin-Edge bezel and 40mm case give it a distinctive presence on the wrist. [seikata-wm-2e3fb2ddfe68]

Also known as: Goldfeather, World Timer

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

40mm

Case Thickness

11.5mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

110m

Dial Color

Green

Jewels

17j

Frequency

28,800 bph

Power Reserve

52 hours

Year

1988

Related Models

• Seiko 3846-167
• Seiko 6686-498
• Seiko 3844-621
• Seiko 7159-138
• Seiko 3869-675
• Seiko 4462-554
• Seiko 6389-562
• Seiko 5671-789
• Seiko 3834-721
• Seiko 7142-925
• Seiko 4564-647
• Seiko 6615-674