Fitbit Ionic smartwatch introduces blood oxygen sensor - BBC News
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Fitbit Ionic: The $300 Apple Watch competitor ships in October - CNET
Upgrade your training with the Fitbit Ionic: Adidas Edition | Stuff
The Adidas-branded Fitbit Ionic smartwatch arrives March 19 for $330 | TechCrunch
Fitbit Ionic: Adidas Edition adds some extra coaching modes - CNET