Seiko Cal. 5634 - 311

The Seiko 5634-311 represents an important milestone in Seiko's 1968 lineup. It features a Black dial protected by a Acrylic crystal and offers 180m of water resistance. [seikata-wm-011f480f03e4]

Also known as: Tuna

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

44mm

Case Thickness

8.4mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

180m

Dial Color

Black

Jewels

30j

Frequency

36,000 bph

Power Reserve

57 hours

Year

1968

Related Models

• Seiko 6238-120
• Seiko 0790-698
• Seiko 7161-519
• Seiko 6146-549
• Seiko 4597-863
• Seiko 7046-480
• Seiko 7064-390
• Seiko 6120-524
• Seiko 0787-115
• Seiko 5294-301
• Seiko 4469-730
• Seiko 4454-709