Review on 🦷 XFU 3 Dupont Brush Head Sonic Electric Toothbrush for Adults and Kids, 5 Modes, IPX7 Waterproof, Built-in 2 Minute Timer, 40,000 VPM XF-2011 (Black) by Christine Smith

Aside from the massage mode, which sounds like an ambulance siren in your mouth, there's nothing extraordinary about this toothbrush. I've had other sonic toothbrushes when the sonic waves really seemed to help clean my teeth; This brush is what it is: a cheap electric toothbrush. It's powerful enough, but it doesn't have any sound effect. The bristles are quite hard. Overall disappointed with it. This toothbrush requires 2 AAA batteries - contrary to the label, I had to flip the batteries (+side down) for the toothbrush to work.