Seiko Cal. 6221 - 638

The 6221-638 is a sought-after Automatic piece from Seiko's golden era. Powered by the 6221 caliber with 17j jewels beating at 36,000 bph, it delivers a 53 hours power reserve. [seikata-wm-d3d1c7e0cbc5]

Also known as: Bullhead

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

39mm

Case Thickness

8.9mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

30m

Dial Color

White

Jewels

17j

Frequency

36,000 bph

Power Reserve

53 hours

Year

1973

Related Models

• Seiko 6693-408
• Seiko 6195-197
• Seiko 4447-735
• Seiko 7068-375
• Seiko 6253-482
• Seiko 6646-899
• Seiko 4464-321
• Seiko 6313-489
• Seiko 4518-453
• Seiko 4593-931
• Seiko 6313-650
• Seiko 0764-134