Freediving computer Ratio iDive Free Sport

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Price excluding tax / DOM-TOM €332.50

IDive Free Sport Ratio computer. It includes the prevention of Taravana syndrome and prevents hemoptysis. Air Diving.


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Freediving computer Ratio iDive Free Sport
The freediving computer iDive Free Sport is the first computer to prevent Taravana syndrome and hemoptysis in snorkeling.

The iDive Free Sport Apnea Computer Watch revolutionizes the safety of snorkeling. It prevents two major dangers of apnea:
  • Taravana syndrome by calculating the recovery time between each apnea
  • The risk of haemoptysis by indicating to the diver the maximum depth to be reached during the first dives.
  • The iDive Free Avantgarde Ratio is also an AIR dive computer incorporating the Buhlmann ZHL-16B table and allows diving but also Nitrox up to 50%

Numerous functions are also available such as compass, altimeter, barometer, thermometer, weather forecast.

This computer works with a rechargeable lithium-ion battery on a USB socket.


  • Taravana effect prevention algorithm: yes
  • Hemoptyl prevention algorithm: yes
  • Freediving mode: 1x mixture, air or nitrox 21-50%
    • Apnea mode:
    • Surface Recovery Time
    • Recovery countdown
    • Surface Interval
    • Instantaneous and maximum depth reached
    • Diving time
    • Diving number
    • Speed
    • Profile of the last apnea
    • Session Summary with Average Data
    • Alarms: acoustic and visual: depth, diving time, hydration
  • Diving mode:
    • Depth gauge and dive computer
    • Mixture: 1x gas: AIR or Nitrox (21-50%)
    • Adjustment: yes: 6x levels
    • Decompression Model: Buhlmann ZHL-16-B
    • Repetitive dives: yes
    • Adjustment of safety steps: yes in time and depth
    • Deep stop: yes
    • Last decompression adjustment: yes
    • Deco Planner: yes, planner and no decompression time

  • Technical characteristics :
    • Display: super bright LED
    • Backlight: yes, always on under water
    • Definition: 80x80 pixel
    • Glass: Sapphire Anti-scratch
    • Material: Composite (Edition Sport)
    • Wrist strap extension: included
    • Battery: Lithium: 40 hours in dive, 2-3 months in watch mode, 6-7 months in standby
    • Charge: via USB cable
    • Logbook: 18 hours of snorkeling - 600 snorkeling - 160 hours of diving
    • Maximum Depth: 150m (Sport)
    • PC and MAC compatible software interface


  • 1x Diving Computer Ratio iDive Free Sport
  • 1x USB charging and data transmission cable
  • 1x strap extension.

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