Seiko Cal. 5621 - 720

The Seiko 5621-720 represents an important milestone in Seiko's 1971 lineup. It features a Black dial protected by a Hardlex crystal and offers 80m of water resistance. [seikata-wm-923b4e50df98]

Specifications

Movement

Automatic

Case Material

Stainless Steel

Case Width

41mm

Case Thickness

11.7mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

80m

Dial Color

Black

Jewels

29j

Frequency

28,800 bph

Power Reserve

56 hours

Year

1971

Related Models

• Seiko 7113-902
• Seiko 0768-329
• Seiko 0779-741
• Seiko 7030-372
• Seiko 4584-925
• Seiko 4587-767
• Seiko 6163-784
• Seiko 6290-543
• Seiko 6160-102
• Seiko 3815-164
• Seiko 3826-862
• Seiko 6114-594