Seiko Cal. 6621 - 356

This Hand-Winding model from 1968 features a 45mm PVD Black case. It features a Navy dial protected by a Acrylic crystal and offers 30m of water resistance. [seikata-wm-7311e7d9bb27]

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

45mm

Case Thickness

14.5mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

30m

Dial Color

Navy

Jewels

31j

Frequency

21,600 bph

Power Reserve

51 hours

Year

1968

Related Models

• Seiko 4418-397
• Seiko 6610-146
• Seiko 6154-256
• Seiko 6159-871
• Seiko 5299-615
• Seiko 5258-887
• Seiko 7063-870
• Seiko 7081-789
• Seiko 5629-405
• Seiko 6389-282
• Seiko 6679-655
• Seiko 3887-507