Wave Pro (White ABS). Wave Special (White). Wave Pro (Aluminum). Wave Pro(Stainless Steel). Wave Pro (Transparent). [Gentle & Efficient Brushing] The Wave Special's 60° oscillations effortlessly emulate the dentist-recommended Modified Bass brushing technique for a superior clean. Its soothing 26,000 vibrations/min. are well-suited for all users, including beginners and those with sensitive teeth. [Gentle from Front to Back] The brush heads are coated in a soft food-grade TPE coating for a soothing brushing experience. The gum-friendly, ultra-fine bristles deeply clean teeth and gums, and are fitted using an advanced copper-free tufting process, securing them in place and preventing rusting. [Seamless Design & Matte Feel] The handle's seamless design keeps out dirt and grime, and the soft Matte PU coating makes it comfortable to hold while brushing. [50-Day Battery Life] The travel companion. Fully charges in just 3 hours through the USB-C cable, with a single charge lasting up to 50 days.*When on the default Mode 1, twice a day, for two minutes each time. [Smart App] The Laifen App allows you to personalize your brushing across 1,000 possible brushing setting combinations, and guides you to a sparkling smile with the Smart Brushing Timer and Zone Change Reminder.