Seiko Cal. 6658 - 194

The Seiko 6658-194 represents an important milestone in Seiko's 1981 lineup. The Inner Rotating bezel and 45mm case give it a distinctive presence on the wrist. [seikata-wm-f1b058c964d4]

Also known as: Helmet, Bellmatic

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

45mm

Case Thickness

10.9mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

160m

Dial Color

Green

Jewels

29j

Frequency

28,800 bph

Power Reserve

49 hours

Year

1981

Related Models

• Seiko 6641-240
• Seiko 6276-713
• Seiko 6187-864
• Seiko 3850-906
• Seiko 3882-529
• Seiko 7125-333
• Seiko 0750-789
• Seiko 4540-772
• Seiko 4466-636
• Seiko 6118-798
• Seiko 4517-262
• Seiko 4430-989