Seiko Cal. 6613 - 441

The Seiko 6613-441 represents an important milestone in Seiko's 1981 lineup. Powered by the 6613 caliber with 28j jewels beating at 28,800 bph, it delivers a 44 hours power reserve. [seikata-wm-d59af61acaaa]

Also known as: Bullhead, Sea Horse

Specifications

Movement

Kinetic

Case Material

Stainless Steel

Case Width

37mm

Case Thickness

14.8mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

90m

Dial Color

Blue Sunburst

Jewels

28j

Frequency

28,800 bph

Power Reserve

44 hours

Year

1981

Related Models

• Seiko 6631-256
• Seiko 4424-182
• Seiko 0775-391
• Seiko 6631-877
• Seiko 6387-362
• Seiko 5619-952
• Seiko 6358-391
• Seiko 0798-776
• Seiko 3821-200
• Seiko 4444-161
• Seiko 0737-622
• Seiko 7118-762