Xiaomi Oscillation Electric Toothbrush - White Double oscillation angle Technologically innovative, equipped with an oscillating sonic motor, it vibrates while turning, driving the brush head to achieve double the swing angle, enabling it to reach precisely into molar blindspots. ( In deep vibration cleaning mode, the oscillation angle is twice that in standard cleaning mode. Test report No.: WTS2024-18588. Tested by Vkan Certification & Testing Co., Ltd. (CVC).) Follows the Bass toothbrushing technique Complies with the Bass brushing technique's oscillation rules to deeply clean the tooth surface, gum gaps and blind areas, and clean each tooth fully.