Seiko Cal. 6664 - 928

The Seiko 6664-928 represents an important milestone in Seiko's 1968 lineup. Powered by the 6664 caliber with 24j jewels beating at 28,800 bph, it delivers a 61 hours power reserve. [seikata-wm-db101d5da873]

Also known as: Bullhead, Goldfeather

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

39mm

Case Thickness

13.2mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

140m

Dial Color

Silver

Jewels

24j

Frequency

28,800 bph

Power Reserve

61 hours

Year

1968

Related Models

• Seiko 5255-459
• Seiko 4566-997
• Seiko 5643-854
• Seiko 4571-576
• Seiko 6354-261
• Seiko 6120-544
• Seiko 6166-342
• Seiko 6226-380
• Seiko 3810-118
• Seiko 6252-198
• Seiko 6123-520
• Seiko 4454-128