Seiko Cal. 6188 - 821

This Spring Drive model from 1968 features a 43mm Two-Tone case. It features a Green dial protected by a Hardlex crystal and offers 200m of water resistance. [seikata-wm-bdba02d39557]

Also known as: Helmet, World Timer

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

43mm

Case Thickness

9.2mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

200m

Dial Color

Green

Jewels

33j

Frequency

21,600 bph

Power Reserve

70 hours

Year

1968

Related Models

• Seiko 5230-345
• Seiko 5643-155
• Seiko 6183-631
• Seiko 6611-161
• Seiko 7176-477
• Seiko 0796-922
• Seiko 5628-830
• Seiko 7071-563
• Seiko 5676-283
• Seiko 7153-964
• Seiko 3816-430
• Seiko 7097-521