Seiko Cal. 0723 - 403

The Seiko 0723-403 represents an important milestone in Seiko's 1977 lineup. It features a Blue Sunburst dial protected by a Hardlex crystal and offers 170m of water resistance. [seikata-wm-9296426e04de]

Also known as: Tuna, UFO

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

42mm

Case Thickness

14.9mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

170m

Dial Color

Blue Sunburst

Jewels

30j

Frequency

21,600 bph

Power Reserve

38 hours

Year

1977

Related Models

• Seiko 0741-200
• Seiko 0767-533
• Seiko 0731-428
• Seiko 4497-901
• Seiko 6252-586
• Seiko 5253-364
• Seiko 7136-585
• Seiko 3890-427
• Seiko 6654-966
• Seiko 4424-158
• Seiko 6675-984
• Seiko 4595-517