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Spiros Kartelias on Twitter: "Suunto D4f is now available https://t.co/oaPFWMFMNJ ! Specialized freedive computer! #suunto #freedivegear https://t.co/XWrqcVcGRT" / Twitter
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![SST 27C is down to the depth of 23m from the memory of Suunto D4f on... | Download Scientific Diagram SST 27C is down to the depth of 23m from the memory of Suunto D4f on... | Download Scientific Diagram](https://www.researchgate.net/publication/319537135/figure/fig1/AS:536242419109888@1504861563046/SST-27C-is-down-to-the-depth-of-23m-from-the-memory-of-Suunto-D4f-on-20th-August-2017-in.png)