Seiko Cal. 4422 - 721

Released in 1971, the Cal. 4422 with design code 721 was part of Seiko's domestic market collection. It features a Blue Sunburst dial protected by a Sapphire crystal and offers 150m of water resistance. [seikata-wm-daf652688ede]

Specifications

Movement

Kinetic

Case Material

Hardlex-Coated Steel

Case Width

39mm

Case Thickness

8.2mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

150m

Dial Color

Blue Sunburst

Jewels

28j

Frequency

36,000 bph

Power Reserve

45 hours

Year

1971

Related Models

• Seiko 3848-149
• Seiko 7041-468
• Seiko 6160-934
• Seiko 3830-246
• Seiko 4570-707
• Seiko 6348-135
• Seiko 3877-614
• Seiko 6364-396
• Seiko 5665-423
• Seiko 0783-680
• Seiko 6615-861
• Seiko 6655-715