Seiko Cal. 7131 - 615

This Hand-Winding model from 1987 features a 46mm Titanium case. It features a Navy dial protected by a Sapphire crystal and offers 40m of water resistance. [seikata-wm-c19c4cfb61bd]

Also known as: Bullhead

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

46mm

Case Thickness

12.7mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

40m

Dial Color

Navy

Jewels

33j

Frequency

21,600 bph

Power Reserve

60 hours

Year

1987

Related Models

• Seiko 7121-245
• Seiko 5239-300
• Seiko 7143-711
• Seiko 4519-354
• Seiko 6627-976
• Seiko 4454-879
• Seiko 5211-661
• Seiko 7170-805
• Seiko 5289-725
• Seiko 7132-926
• Seiko 4522-629
• Seiko 7066-947