Seiko Cal. 6683 - 556

The Seiko 6683-556 represents an important milestone in Seiko's 1978 lineup. Powered by the 6683 caliber with 17j jewels beating at 28,800 bph, it delivers a 37 hours power reserve. [seikata-wm-83df415402b3]

Also known as: Helmet, Emperor

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

43mm

Case Thickness

12.2mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

170m

Dial Color

Cream

Jewels

17j

Frequency

28,800 bph

Power Reserve

37 hours

Year

1978

Related Models

• Seiko 0752-840
• Seiko 4486-711
• Seiko 6393-408
• Seiko 3856-112
• Seiko 6125-430
• Seiko 5235-785
• Seiko 6229-123
• Seiko 6657-715
• Seiko 5249-720
• Seiko 4531-745
• Seiko 4425-112
• Seiko 0781-656