Seiko Cal. 6391 - 770

The 6391-770 is a sought-after Hand-Winding piece from Seiko's golden era. The Inner Rotating bezel and 43mm case give it a distinctive presence on the wrist. [seikata-wm-b2e182b8e1f0]

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

43mm

Case Thickness

13.1mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

200m

Dial Color

Blue Sunburst

Jewels

22j

Frequency

21,600 bph

Power Reserve

48 hours

Year

1979

Related Models

• Seiko 0719-702
• Seiko 5244-633
• Seiko 7143-525
• Seiko 4447-405
• Seiko 4460-282
• Seiko 6161-400
• Seiko 4418-825
• Seiko 3866-884
• Seiko 6348-326
• Seiko 3826-727
• Seiko 4585-583
• Seiko 4463-651