Seiko Cal. 6621 - 918

The 6621-918 is a sought-after Quartz piece from Seiko's golden era. Powered by the 6621 caliber with 30j jewels beating at 28,800 bph, it delivers a 42 hours power reserve. [seikata-wm-968447f591db]

Also known as: Bullhead

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

41mm

Case Thickness

10.7mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

130m

Dial Color

Cream

Jewels

30j

Frequency

28,800 bph

Power Reserve

42 hours

Year

1976

Related Models

• Seiko 3822-157
• Seiko 5228-740
• Seiko 7089-567
• Seiko 7097-604
• Seiko 4513-261
• Seiko 0726-752
• Seiko 6386-324
• Seiko 5223-300
• Seiko 3853-543
• Seiko 5670-455
• Seiko 5655-410
• Seiko 0728-163