The replacement power handle featured here is designed for the Cybersonic 3 but is compatible with all Cybersonic charging bases including the Cybersonic Classic. It will give you that dentist cleaning feel with our patented Harmonic Resonance technology moving at over 40,000 strokes per minute, making it the “World’s Fastest Toothbrush” with each scientifically designed attachement vibrating at a specific frequency for the perfect cleaning every time. The long lasting charge allows up to 1-2 weeks of usage with a fully charged handle, giving you the convenient option of leaving the charging base at home when you travel for the weekend. Cybersonic has over 25 years of making oral care easier, faster, and a more effective – designed by Dentists for those looking for the just left the dentist feeling every day. Our guarantee to you is 100% customer satisfaction, with a 30 day money back guarantee no questions asked, along with a full 1 year manufacturers warranty.