Seiko Cal. 5621 - 561

The Seiko 5621-561 represents an important milestone in Seiko's 1971 lineup. Powered by the 5621 caliber with 25j jewels beating at 21,600 bph, it delivers a 43 hours power reserve. [seikata-wm-38da66eea632]

Also known as: Helmet

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

45mm

Case Thickness

15.9mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

190m

Dial Color

Black

Jewels

25j

Frequency

21,600 bph

Power Reserve

43 hours

Year

1971

Related Models

• Seiko 6624-387
• Seiko 4513-846
• Seiko 5271-279
• Seiko 7063-949
• Seiko 4491-341
• Seiko 4480-282
• Seiko 6629-169
• Seiko 5635-839
• Seiko 6239-290
• Seiko 7084-282
• Seiko 0763-968
• Seiko 4495-655