Seiko Cal. 0720 - 817

The 0720-817 is a sought-after Automatic piece from Seiko's golden era. Powered by the 0720 caliber with 24j jewels beating at 21,600 bph, it delivers a 52 hours power reserve. [seikata-wm-7f57c7f2a83a]

Also known as: Sportsmatic, Navigator

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

37mm

Case Thickness

12.1mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

30m

Dial Color

Blue Sunburst

Jewels

24j

Frequency

21,600 bph

Power Reserve

52 hours

Year

1971

Related Models

• Seiko 6661-133
• Seiko 0797-478
• Seiko 7060-607
• Seiko 5679-251
• Seiko 5231-589
• Seiko 5275-892
• Seiko 7166-480
• Seiko 4564-391
• Seiko 7021-169
• Seiko 6341-746
• Seiko 3847-185
• Seiko 7030-365