Seiko Cal. 6646 - 408

The Seiko 6646-408 represents an important milestone in Seiko's 1982 lineup. Powered by the 6646 caliber with 26j jewels beating at 36,000 bph, it delivers a 40 hours power reserve. [seikata-wm-f81a33e3e632]

Also known as: Shogun, Helmet

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

41mm

Case Thickness

9.2mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

150m

Dial Color

White

Jewels

26j

Frequency

36,000 bph

Power Reserve

40 hours

Year

1982

Related Models

• Seiko 6213-848
• Seiko 6138-876
• Seiko 0766-277
• Seiko 4594-973
• Seiko 6365-129
• Seiko 5248-256
• Seiko 6688-719
• Seiko 6257-916
• Seiko 6211-940
• Seiko 3864-623
• Seiko 7180-534
• Seiko 4594-487