The amount of different toothbrushes we have tried- OMG. These are GREAT. -45 days for a single charge. - 2 minute smart timer that vibrates every 30 seconds - comes in different colors - the entire brush is waterproof -comes with 1 Smart Toothbrush, 1 charging base, 6 DuPont brush heads (!!!!!), 1 travel case! Also linking the brush covers and silicone tray! LTKHome LTKmomlife LTKKids