Seiko Cal. 6391 - 507

The 6391-507 is a sought-after Solar piece from Seiko's golden era. It features a Burgundy dial protected by a Hardlex crystal and offers 60m of water resistance. [seikata-wm-d256092e9fe4]

Also known as: Rally, Baby Tuna

Specifications

Movement

Solar

Case Material

Gold-Plated

Case Width

44mm

Case Thickness

8.9mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

60m

Dial Color

Burgundy

Jewels

33j

Frequency

21,600 bph

Power Reserve

68 hours

Year

1980

Related Models

• Seiko 3887-560
• Seiko 7189-718
• Seiko 4532-797
• Seiko 0725-635
• Seiko 3866-722
• Seiko 4542-880
• Seiko 7178-436
• Seiko 6262-962
• Seiko 6145-618
• Seiko 4482-915
• Seiko 0726-309
• Seiko 6285-367