Best Buy: Philips Sonicare PowerUp Battery-Powered Toothbrush Scuba Blue HX3631/06
Amazon.com: Pearl Enterprise Compatible Philips Sonicare Toothbrush Heads,Phillips Sonic Care Brush Head, Powerup Replacement Electric Powered Power Up - 4 pk : Health & Household
Philips Sonicare Powerup Battery Toothbrush White, Blue and Multicolor, HX5611/01 - Walmart.com