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Colgate E1 toothbrush review: The app-enabled, smart electric brush for kids and adults | The Independent
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CES 2018: Colgate Debuts Apple Exclusive Smart Electronic Toothbrush With ResearchKit Integration - MacRumors
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Colgate-Palmolive Launches hum by Colgate: The New Smart Electric Toothbrush that Guides Users to Brush Better and Get In Sync with Their Smile
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Colgate E1 toothbrush review: The app-enabled, smart electric brush for kids and adults | The Independent
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