Seiko Cal. 6621 - 750

This Spring Drive model from 1973 features a 39mm Hardlex-Coated Steel case. It features a Cream dial protected by a Mineral crystal and offers 30m of water resistance. [seikata-wm-73bce7140e89]

Also known as: Tuna, Sea Horse

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

39mm

Case Thickness

12.6mm

Lug Width

18mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

30m

Dial Color

Cream

Jewels

34j

Frequency

21,600 bph

Power Reserve

57 hours

Year

1973

Related Models

• Seiko 6646-804
• Seiko 3885-223
• Seiko 6195-317
• Seiko 5219-380
• Seiko 3822-988
• Seiko 4419-270
• Seiko 3865-658
• Seiko 3817-169
• Seiko 5651-100
• Seiko 6154-678
• Seiko 6273-630
• Seiko 4587-780