Seiko Cal. 0721 - 400

This Kinetic model from 1980 features a 43mm Stainless Steel case. It features a Blue Sunburst dial protected by a Sapphire crystal and offers 50m of water resistance. [seikata-wm-5f5a5d9602d0]

Also known as: Samurai, Helmet

Specifications

Movement

Kinetic

Case Material

Stainless Steel

Case Width

43mm

Case Thickness

10.5mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

50m

Dial Color

Blue Sunburst

Jewels

35j

Frequency

21,600 bph

Power Reserve

37 hours

Year

1980

Related Models

• Seiko 6643-405
• Seiko 6644-219
• Seiko 4590-448
• Seiko 7150-461
• Seiko 3834-232
• Seiko 3842-641
• Seiko 7167-880
• Seiko 6617-769
• Seiko 4515-224
• Seiko 4479-876
• Seiko 4423-141
• Seiko 5264-288