RONGCHUANG AY-681 Automatic Electric Toothbrush White

What the brush does and who it suits

The RONGCHUANG AY-681 is a rechargeable sonic toothbrush with a U-shaped head that wraps around the teeth. It targets adults who want an automatic cleaning routine without manual brushing motions. The kit includes the handle, one brush head, a wireless charging base, a USB cable and a manual. Soft nylon bristles and food-grade silicone aim to protect gums while whitening.

Behaviour during a full cleaning cycle

A standard clean lasts 30 seconds while the whitening mode runs for 15 minutes, both driven by a 6 W motor at 3.7 V. The 1500 mAh battery delivers roughly one week of use after a three-hour wireless charge. Four selectable modes — powerful, medium, gum massage and whitening — let the user match intensity to daily needs without performance drop-off as the charge depletes.

Limits of the ultrasonic interface

The brush relies on high-frequency vibration rather than rotating bristles, so cleaning depth depends on the U-head maintaining contact with every tooth surface. The 30-second automatic timer stops the cycle regardless of coverage, meaning users with wider arches may need a second pass. No pressure sensor or position detection is present, so technique still influences results.