The Liwei educational and children earphone solution is designed around hearing protection. A hardware limiter keeps the volume never above 85 dB, while Bluetooth ear-back with latency under 40 ms lets learners hear their own pronunciation in real time. The solution integrates a noise-reducing microphone for online classes and follows child-safe design rules for materials and structure.
Key Specifications
| Bluetooth version | BLE 6.0 |
| Volume limit | 85 dB / 94 dB selectable |
| Audio codecs | AAC / SBC |
| Bluetooth ear-back latency | <40 ms |
| Signal-to-noise ratio | ≥90 dB |
| Battery life | 10–15 hours |
| Charging port | Type-C / Micro-USB |
| Microphone solution | Noise-reducing electret microphone |
| Safety standards | EN 71 / CE / RoHS |
Solution Highlights
- 85 dB safe volume — a hard limiter circuit keeps the volume never above 85 dB and protects the hearing of children.
- Bluetooth ear-back — real-time ear-back with latency under 40 ms lets learners hear their own pronunciation and correct it immediately.
- HD online-class calls — noise-reducing microphone and clear voice processing keep classroom interaction free from environmental interference.
- Child-safe design — food-grade contact materials, rounded corners, pull-resistant cable and a low-blue-light indicator.
- Simple operation — one-button power-on pairing with anti-mistouch keys so children can use it independently.
Application Scenarios
School multimedia teaching, online classes, language learning and reading practice, listening exams and children entertainment.
Solution Consultation
The Liwei educational earphone solution has been delivered to several education institutions. We provide the complete PCBA solution and safety compliance guidance. Contact us for samples and solution details.
