Sonic Technology. Whitens teeth by reducing surface stains in two weeks. Gentle, effective cleaning to remove plaque. Works with: Oral-B Pulsonic and Oral-B Vitality Sonic. Will not work with: Oral-B Sonic Complete, Oral-B Smart Series, Oral-B Professional Care, Oral-B Vitality, Oral-B Pro-Health Power, Oral-B CrossAction Power.