Seiko Cal. 5618 - 307

The Seiko 5618-307 represents an important milestone in Seiko's 1973 lineup. Powered by the 5618 caliber with 25j jewels beating at 28,800 bph, it delivers a 72 hours power reserve. [seikata-wm-f1f3aaf0bec3]

Also known as: Tuna, Goldfeather

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

38mm

Case Thickness

12.3mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

130m

Dial Color

Navy

Jewels

25j

Frequency

28,800 bph

Power Reserve

72 hours

Year

1973

Related Models

• Seiko 6257-320
• Seiko 4556-565
• Seiko 7059-262
• Seiko 7129-681
• Seiko 0711-446
• Seiko 4455-698
• Seiko 6360-667
• Seiko 4468-522
• Seiko 6191-294
• Seiko 6399-962
• Seiko 6151-401
• Seiko 6369-425