Seiko Cal. 6690 - 137

This Hand-Winding model from 1990 features a 44mm PVD Black case. With its 20mm lug width and 10.5mm profile, it sits comfortably on most wrists. [seikata-wm-c38b2b178539]

Also known as: Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

44mm

Case Thickness

10.5mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

150m

Dial Color

Burgundy

Jewels

33j

Frequency

36,000 bph

Power Reserve

60 hours

Year

1990

Related Models

• Seiko 7067-158
• Seiko 7096-329
• Seiko 0723-505
• Seiko 5235-358
• Seiko 3830-902
• Seiko 6392-131
• Seiko 6327-673
• Seiko 6261-178
• Seiko 5675-439
• Seiko 6320-595
• Seiko 5679-864
• Seiko 4445-345