Seiko Cal. 6621 - 331

The 6621-331 is a sought-after Solar piece from Seiko's golden era. Powered by the 6621 caliber with 19j jewels beating at 21,600 bph, it delivers a 44 hours power reserve. [seikata-wm-850f5f68bf08]

Also known as: Baby Tuna

Specifications

Movement

Solar

Case Material

Titanium

Case Width

34mm

Case Thickness

9.4mm

Lug Width

20mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

80m

Dial Color

Navy

Jewels

19j

Frequency

21,600 bph

Power Reserve

44 hours

Year

1966

Related Models

• Seiko 4478-534
• Seiko 4563-553
• Seiko 3824-983
• Seiko 4524-246
• Seiko 0727-180
• Seiko 6173-189
• Seiko 6347-164
• Seiko 6265-242
• Seiko 5287-657
• Seiko 6246-651
• Seiko 5650-102
• Seiko 6647-972