Seiko Cal. 6646 - 581

The Seiko 6646-581 represents an important milestone in Seiko's 1988 lineup. The Inner Rotating bezel and 36mm case give it a distinctive presence on the wrist. [seikata-wm-f95ed9ba7566]

Also known as: Panda, Flighty

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

36mm

Case Thickness

13.5mm

Lug Width

22mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

150m

Dial Color

Green

Jewels

29j

Frequency

28,800 bph

Power Reserve

57 hours

Year

1988

Related Models

• Seiko 7146-542
• Seiko 6325-243
• Seiko 6253-550
• Seiko 6127-211
• Seiko 3853-882
• Seiko 7160-138
• Seiko 4519-903
• Seiko 7084-699
• Seiko 7019-289
• Seiko 5239-287
• Seiko 4483-256
• Seiko 3859-857