usmile Q20 Kids Smart Sonic Electric Toothbrush: Sonic working principle
This usmile Q20 Kids Smart Sonic Electric Toothbrush is designed for parents who want to make brushing fun and effective for children aged 3-15. It turns a daily chore into a playful routine, helping you ensure your child's dental health without the usual battles.
The soft bristles and three modes, including Beginner Adaptation, gently clean while the sonic vibration at 30,000-33,000 times per minute removes plaque thoroughly. With a 90-day battery life, you can rely on it for months without constant charging. The mic picks up subtle sounds, so you can hear if your child is brushing properly from another room. It's USB charging compatible, making it easy to power up anywhere.
Features
- 3 brushing modes including Intelligent Anti-Cavity
- Battery life: 90 days
- USB charging
- Soft bristles
- Vibration frequency: 30000-33000 times/minute
- Sonic working principle
General specs
- Brand: usmile
- Model: Q20
- Seller: Joom
- ID: 692854e9464b4c01207b9805
- Timer: Yes
- Material: ABS
- Age Range: 3-12 years
- Power Source: Rechargeable
- Cleaning Modes: 2
- Brush Head Type: Round
- Charging Method: USB
- Bristle Material: DuPont
- Bristle Softness: Soft
- Water Resistance: IPX7
- Cleaning Technology: Sonic
- Replaceable Brush Heads: Yes
- First listed by seller: 12/6/25
If you are interested in more details, you can find full information on the seller's page.
Shipping options
United States
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| Brand | usmile | TEETHEORY | COSLUS | Marlincare | SAKYPRORAL | Laifen |
| Model | Q20 | GEHP206AB | C30 | M10PRO | G5S | WaveSE |
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| Price | $141.10 | $19.99 | $8.99 | $26.99 | $43.99 | $71.99 |
| Seller | Joom | Amazon | Amazon | Amazon | Amazon | Amazon |
| Update | Mar 5, 2026 | Feb 2, 2026 | Feb 7, 2026 | Feb 4, 2026 | Feb 7, 2026 | Feb 7, 2026 |
| Timer | Yes | 2-minute | 2-minute | 2-minute | 2-minute | 2-minute |
| Charging Method | USB | USB | Magnetic | Magnetic | USB | |
| Bristle Softness | Soft | Soft | Soft | Soft | Soft | Soft |
| Water Resistance | IPX7 | IPX7 | IPX7 | IPX8 | IP68 | |
| Display | LED | LCD, LED, TFT, Touchscreen | LCD | Touchscreen | ||
| Technology | Sonic | Sonic | Sonic | Sonic, Ultrasonic | Sonic | |
| Travel Case | Yes | Yes | Yes | Yes | Yes | |
| Battery Life | 45 | 30, 150 | 180 | 150 | 50 | |
| Battery Type | Li-Polymer | Li-Polymer | Li-Polymer | Li-Polymer | Li-Polymer | |
| Charging Port | USB-C | USB-C | USB-C | USB-C | ||
| Brushing Modes | 3 | 5 | 5 | 5 | 1000 | |
| Pressure Sensor | Yes | Yes | Yes | Yes | ||
| Brush Heads Included | 8 | 2 | 4 | 6 | 2 | |
| Vibrations Per Minute | 40000 | <num1>, <num2> | 55000 | 79000 | 26000 | |
