Seiko Cal. 6390 - 700

This Hand-Winding model from 1990 features a 36mm Two-Tone case. It features a Blue Sunburst dial protected by a Mineral crystal and offers 40m of water resistance. [seikata-wm-4b9ad14f2a9c]

Also known as: Tuna

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

36mm

Case Thickness

9.1mm

Lug Width

20mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

40m

Dial Color

Blue Sunburst

Jewels

27j

Frequency

21,600 bph

Power Reserve

67 hours

Year

1990

Related Models

• Seiko 6311-200
• Seiko 4537-587
• Seiko 5682-564
• Seiko 5699-627
• Seiko 6221-981
• Seiko 7187-825
• Seiko 6627-551
• Seiko 4413-440
• Seiko 6173-675
• Seiko 7118-808
• Seiko 6191-213
• Seiko 6136-194