Seiko Cal. 0721 - 351

The 0721-351 is a sought-after Spring Drive piece from Seiko's golden era. It features a Blue Sunburst dial protected by a Sapphire crystal and offers 190m of water resistance. [seikata-wm-40b2425a9aaf]

Also known as: Bullhead

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

39mm

Case Thickness

10.1mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

190m

Dial Color

Blue Sunburst

Jewels

20j

Frequency

21,600 bph

Power Reserve

59 hours

Year

1979

Related Models

• Seiko 4531-441
• Seiko 0737-782
• Seiko 6611-672
• Seiko 6348-194
• Seiko 6636-492
• Seiko 5277-226
• Seiko 7036-555
• Seiko 4531-146
• Seiko 4575-843
• Seiko 5640-894
• Seiko 5296-293
• Seiko 6144-185