Seiko Cal. 6646 - 600

This Solar model from 1973 features a 40mm PVD Black case. Powered by the 6646 caliber with 36j jewels beating at 21,600 bph, it delivers a 63 hours power reserve. [seikata-wm-3545d78139f3]

Also known as: Bellmatic

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

40mm

Case Thickness

11.3mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

30m

Dial Color

Navy

Jewels

36j

Frequency

21,600 bph

Power Reserve

63 hours

Year

1973

Related Models

• Seiko 0715-294
• Seiko 6366-567
• Seiko 6387-559
• Seiko 5250-118
• Seiko 6662-389
• Seiko 4494-989
• Seiko 5265-728
• Seiko 5668-251
• Seiko 6247-745
• Seiko 4445-156
• Seiko 4523-702
• Seiko 6310-132