Seiko Cal. 6635 - 511

This Hand-Winding model from 1978 features a 44mm PVD Black case. Powered by the 6635 caliber with 28j jewels beating at 28,800 bph, it delivers a 69 hours power reserve. [seikata-wm-bf9cca9823f2]

Also known as: Tuna

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

44mm

Case Thickness

9.1mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

90m

Dial Color

Cream

Jewels

28j

Frequency

28,800 bph

Power Reserve

69 hours

Year

1978

Related Models

• Seiko 6663-571
• Seiko 6224-675
• Seiko 5629-103
• Seiko 7045-267
• Seiko 7069-892
• Seiko 6228-821
• Seiko 5635-677
• Seiko 6220-264
• Seiko 6273-793
• Seiko 3823-248
• Seiko 6368-182
• Seiko 3882-643