Sonicare toothbrush teardown: microcontroller, H bridge, and inductive charging
Philips One By Sonicare Battery Toothbrush, Mint Blue, HY1100/03 - Walmart.com
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Amazon.com: PHILIPS Sonicare ProtectiveClean 6500 Rechargeable Electric Power Toothbrush with Charging Travel Case and Extra Brush Head, White, HX6462/05 : Health & Household