Laifen Electric Toothbrush Teardown
Laifen has disrupted the electric toothbrush market with sub-$40 sonic toothbrushes. We took one apart to understand the cost structure.
Key Components
- Sonic Motor: Magnetic levitation type, 31,000 vibrations/min
- Battery: 600mAh Li-polymer
- PCB: Wireless charging coil, MCU, motor driver
- Waterproof Housing: IPX7 rated, ultrasonic welded
BOM Breakdown
| Component | Est. Cost |
|---|---|
| Sonic Motor | $4.50 |
| Li-polymer Battery 600mAh | $2.80 |
| PCB + Wireless Charge Coil | $3.20 |
| Brush Head (2-pack) | $1.50 |
| Housing + Sealing | $3.00 |
| Charging Base | $2.00 |
| Packaging | $1.80 |
| Total BOM | $18.80 |
At $39 retail, this leaves a healthy 52% margin before marketing. The key quality lever is the motor - magnetic levitation vs standard sonic motors.