Seiko Cal. 5211 - 731

The Seiko 5211-731 represents an important milestone in Seiko's 1986 lineup. The Inner Rotating bezel and 40mm case give it a distinctive presence on the wrist. [seikata-wm-671d150cfa4f]

Also known as: Helmet

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

40mm

Case Thickness

14.6mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

130m

Dial Color

Silver

Jewels

17j

Frequency

28,800 bph

Power Reserve

36 hours

Year

1986

Related Models

• Seiko 4464-139
• Seiko 5616-937
• Seiko 6383-312
• Seiko 4552-441
• Seiko 4559-719
• Seiko 0789-283
• Seiko 0779-579
• Seiko 7042-694
• Seiko 6234-576
• Seiko 6622-152
• Seiko 5666-637
• Seiko 3844-965