Seiko Cal. 6646 - 649

The 6646-649 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 6646 caliber with 29j jewels beating at 36,000 bph, it delivers a 49 hours power reserve. [seikata-wm-3b98cec26f14]

Also known as: Bullhead, Goldfeather

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

37mm

Case Thickness

14.6mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

180m

Dial Color

Cream

Jewels

29j

Frequency

36,000 bph

Power Reserve

49 hours

Year

1968

Related Models

• Seiko 6634-526
• Seiko 3877-314
• Seiko 7169-997
• Seiko 6367-794
• Seiko 6353-883
• Seiko 0787-740
• Seiko 6286-116
• Seiko 4495-624
• Seiko 6693-992
• Seiko 7071-864
• Seiko 6242-443
• Seiko 7130-680