Seiko Cal. 6389 - 241

This Spring Drive model from 1977 features a 35mm Hardlex-Coated Steel case. It features a Navy dial protected by a Sapphire crystal and offers 100m of water resistance. [seikata-wm-2ce26d743018]

Also known as: Baby Tuna

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

35mm

Case Thickness

13.8mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

100m

Dial Color

Navy

Jewels

21j

Frequency

28,800 bph

Power Reserve

52 hours

Year

1977

Related Models

• Seiko 6686-920
• Seiko 7180-806
• Seiko 7068-967
• Seiko 4471-440
• Seiko 0757-862
• Seiko 5663-830
• Seiko 4597-691
• Seiko 6227-195
• Seiko 5241-650
• Seiko 7110-172
• Seiko 4440-414
• Seiko 5627-100