Seiko Cal. 4531 - 959

This Hand-Winding model from 1998 features a 34mm Titanium case. The Inner Rotating bezel and 34mm case give it a distinctive presence on the wrist. [seikata-wm-a88ea715de60]

Also known as: Tuna, Sportsmatic

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

34mm

Case Thickness

11.8mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

180m

Dial Color

Silver

Jewels

17j

Frequency

28,800 bph

Power Reserve

50 hours

Year

1998

Related Models

• Seiko 4476-237
• Seiko 6636-740
• Seiko 6233-136
• Seiko 7112-614
• Seiko 6336-676
• Seiko 6282-463
• Seiko 6614-211
• Seiko 6184-638
• Seiko 4433-655
• Seiko 7158-149
• Seiko 4437-114
• Seiko 4448-277