1. IDC: Earwear and Wristbands Drive First Quarter Growth in the Worldwide Wearables Market, Says IDC. https://www.idc.com/getdoc.jsp?containerId=prUS46432620. Accessed 15 June 2020
2. IDC: IDC Reports Strong Growth in the Worldwide Wearables Market, Led by Holiday Ship-ments of Smartwatches, Wrist Band, and Ear-Worn Devices. https://www.idc.com/getdoc.jsp?containerId=prUS44901819
3. Statista: Absatz von Wearables weltweit nach führenden Herstellern im 1. Quartal der Jahre 2019 und 2020. https://de.statista.com/statistik/daten/studie/433019/umfrage/quartalsabsatz-von-wearables-weltweit-nach-hersteller/
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