Advantage: 1) Soft Dupont Nylon bristle, can provide better cleaning and oral care. 2) Rounded end bristle, protect teeth from too-firm brushing. 3) Waterproof package. 4) Smart and comfortable for using. 5) Safe and gentle on teeth and gums. 6) A complete clean for white teeth and healthier gums. 7) Remove up to twice as much plaque as an ordinary manual toothbrush. 8) Come with dentist recommended oscillate and rotate technology for maximum cleaning. Specification: CROSSACTION (YE-50A): Multi-angle clean type 4 sticks SENSI ULTRATHIN (YE-60A): 4 sticks of gum care type 3D WHITE (YE-18A): 4 sticks of whitening and cleaning type FLOSSACTION (YE-25A): 4 sticks of dental floss effect PRECISION CLEAN COMFORTABLE (YE-20A): Precise cleaning type 4 sticks PRECISION CLEAN SURROUNDING (YE-17A): Professional cleaning type 4 sticks SENSITIVE (YE-17S): Sensitive cleaning type 4 sticks *See the photo above for an additional description. How to use: Just simply replace brush head as usual.