Seiko Cal. 6641 - 525

Released in 1991, the Cal. 6641 with design code 525 was part of Seiko's domestic market collection. Powered by the 6641 caliber with 35j jewels beating at 28,800 bph, it delivers a 62 hours power reserve. [seikata-wm-ac9eaffd76e7]

Also known as: Emperor

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

39mm

Case Thickness

8.2mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

180m

Dial Color

Blue Sunburst

Jewels

35j

Frequency

28,800 bph

Power Reserve

62 hours

Year

1991

Related Models

• Seiko 6638-552
• Seiko 6123-150
• Seiko 7189-570
• Seiko 6260-187
• Seiko 5211-856
• Seiko 6141-769
• Seiko 6234-302
• Seiko 6151-100
• Seiko 6166-810
• Seiko 4415-158
• Seiko 6629-365
• Seiko 7118-217