<p>Sonic Technology, up to 40000 strokes/min, remove stains and plaques effectively.</p> <p>Built-in 2 minute auto timer with 30 second interval pause encourages good brushing habits.</p> <p>6 more replacement heads with rings of different colors.</p> <p>(Dentists recommend replacing brush heads every 3 months for optimal brushing performance.)</p> <p>wireless inductive charging ,4 hours charging for minimum 30 days working with 2 times a day.</p> <p>The waterproof design can be washed directly.</p> <p>3 high-precision brushing modes, including Clean, Sensitive and Massage.</p> <p>Specifications:</p> <p>-Toothbrush power source: DC3.7V</p> <p>-Product material: ABS/TPE</p> <p>-Voltage: Global voltage 110V-240V</p> <p>-Bristle: Dupont nylon</p> <p>-Toothbrush power consumption: 1.0W</p> <p>-Charge time: 6 hours to be fully charged</p> <p>Charge method:</p> <p>Wireless charger</p> <p>Attention:</p> <p>1. Fresh users may may experience a tickling/tingling sensation but normally get used to it within 2 weeks.</p> <p>2. Not intended for children under 3. Children under 8 and people who are unable to operate should be supervised by a parent or adult.</p> <p>3. Please swing away the water in the charging hole before you charge the toothbrush.</p>