Seiko Cal. 6646 - 315

The 6646-315 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 6646 caliber with 20j jewels beating at 28,800 bph, it delivers a 54 hours power reserve. [seikata-wm-0c7fe689af18]

Also known as: Golden Tuna

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

45mm

Case Thickness

13.6mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

40m

Dial Color

Black

Jewels

20j

Frequency

28,800 bph

Power Reserve

54 hours

Year

1990

Related Models

• Seiko 0792-332
• Seiko 6146-437
• Seiko 5674-330
• Seiko 6138-781
• Seiko 6699-273
• Seiko 6279-979
• Seiko 6652-519
• Seiko 0735-418
• Seiko 5236-778
• Seiko 4593-314
• Seiko 3887-598
• Seiko 5229-987