It is weak compared with Sonicare
My old Sonicare does not support 220V AC voltage. This one use USB to charge, so I figured it is good for travel. It comes with case,  which is good for travel. But the vibration is weak compared with Sonicare, the vibration decreases a lot whenever the brush touches the teeth. I do not feal it clean as well. Otherwise, the brush has lots of features and looks very good, like a quality product.
Rating: 3 stars