Description The Philips HX6064/10 brush heads in white feature a clip-on design compatible with a wide range of Philips Sonicare models including Series 2 Plaque Defense, Series 3 Gum Health, DiamondClean, DiamondClean Smart, EasyClean, Essence, FlexCare variants, For Kids, HealthyWhite, PowerUp and ProtectiveClean. Each head offers normal-bristle hardness and includes blue wear-indicator bristles that fade with use. The pack contains four W Optimal White brush heads in standard size. Replacement every three months is recommended for optimal cleaning performance. Key Features - Clip-on design - BrushSync mode selection - Normal bristle hardness - Blue wear-indicator bristles - Includes 4 W Optimal White brush heads - Recommended replacement every 3 months Specifications Brand: Philips Model Number: HX6064/10 Color: White Compatibility: Philips Sonicare Series 2 Plaque Defense, Series 3 Gum Health, DiamondClean, DiamondClean Smart, EasyClean, Essence, FlexCare, FlexCare Platinum, FlexCare Platinum Connected, FlexCare+, For Kids, HealthyWhite, HealthyWhite+, PowerUp, ProtectiveClean Bristle Hardness: Normal Brush Head Size: Standard Brush Head Quantity: 4 Technology: BrushSync Wear Indicator: Blue bristles fade