4-IN-1 COMPLETE ORAL CARE FOR TEETH, GUMS, CHEEKS & TONGUE! This FOREO ISSA 3 Electric Sonic Toothbrush cleans it all, keeping your teeth plaque-free and your whole mouth significantly cleaner. 100% waterproof and created from medical-grade, non-porous, quick-drying silicone, ISSA 3 is the most complete oral care out there. It features a sleek, slim-fit Hybrid Wave brush head, tough on plaque and gentle on the gums, fusing double-strength silicone and PBT bristles. Extreme customization & convenience: The brush heads last up to 6 months, and star silicone ridges on the back for a thorough tongue and cheeks cleanse. ISSA 3 also offers 16 adjustable high-intensity pulsations going up to 11,000 pulses per minute while smart Swedish design boasts an insane battery life of 365 days of use per charge, inbuilt timer, low-battery indicator light, travel lock, and memorizes your preferred settings for ultimate brushing convenience. Benefits: - Prevents gum recession and damage to tooth enamel.