Seiko Cal. 7181 - 370

This Spring Drive model from 1966 features a 41mm Hardlex-Coated Steel case. It features a Silver dial protected by a Acrylic crystal and offers 140m of water resistance. [seikata-wm-952193e4e1f3]

Also known as: Monster

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

41mm

Case Thickness

11.2mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

140m

Dial Color

Silver

Jewels

26j

Frequency

28,800 bph

Power Reserve

71 hours

Year

1966

Related Models

• Seiko 7035-677
• Seiko 3875-411
• Seiko 6255-344
• Seiko 6652-958
• Seiko 6216-343
• Seiko 3828-616
• Seiko 4445-875
• Seiko 7099-761
• Seiko 6247-737
• Seiko 5686-981
• Seiko 5212-626
• Seiko 4568-419