Seiko Cal. 6646 - 905

This Automatic model from 1969 features a 45mm PVD Black case. Powered by the 6646 caliber with 36j jewels beating at 28,800 bph, it delivers a 69 hours power reserve. [seikata-wm-138a51714dbc]

Also known as: Sumo

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

45mm

Case Thickness

10.6mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

200m

Dial Color

Champagne

Jewels

36j

Frequency

28,800 bph

Power Reserve

69 hours

Year

1969

Related Models

• Seiko 7118-207
• Seiko 5697-399
• Seiko 6343-240
• Seiko 7074-395
• Seiko 6397-792
• Seiko 0738-504
• Seiko 4561-957
• Seiko 4519-995
• Seiko 3852-255
• Seiko 6139-966
• Seiko 3851-258
• Seiko 0774-286