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Philips Sonicare 9900 Prestige review: One of the smartest things you can put in your mouth | British GQ
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Philips Sonicare 9900 Prestige Rechargeable Electric Toothbrush with SenseIQ Champagne HX9990/11 - Best Buy | Rechargeable toothbrush, Brushing teeth, Gum care
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Philips Sonicare DiamondClean Prestige 9900 - Sonic Electric Toothbrush with 1x A3 Premium All-in-One Brush Head and Charging Case in Midnight Blue (Model HX9992/12) : Amazon.co.uk: Health & Personal Care
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