1. High signal-to-noise ratio; 2. One-key touch operation, easier to use; 3. 5-level volume adjustment, beep feedback; 4. The appearance of the Bluetooth headset is fashionable and not easy to fall off; 5. The mini portable charging box can fully charge the charging box in 8-10 hours, providing a total of 500-600 hours of use time for hearing aids; 6. FCC, ROHS, CE, EMC certification;