Seiko Cal. 6630 - 646

The Seiko 6630-646 represents an important milestone in Seiko's 1968 lineup. The Fixed bezel and 36mm case give it a distinctive presence on the wrist. [seikata-wm-8dacc4f24117]

Also known as: Monster

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

36mm

Case Thickness

10.1mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

50m

Dial Color

Black

Jewels

33j

Frequency

21,600 bph

Power Reserve

44 hours

Year

1968

Related Models

• Seiko 6653-123
• Seiko 4449-543
• Seiko 5297-657
• Seiko 7180-145
• Seiko 6654-576
• Seiko 6645-942
• Seiko 3891-479
• Seiko 4513-189
• Seiko 7094-138
• Seiko 3879-168
• Seiko 6385-607
• Seiko 4542-776