[Better and softer hearing]: If you are experiencing mild to moderate hearing loss and need to amplify the sound to hear comfortably, then the hearing amplifier may be the ideal solution. Tip: It usually takes 1 week to adapt to the new sound obtained through this auxiliary tool.[Noise reduction] Hearing aids equipped with automatic optical ear detection. By automatically sensing the time difference between the emission time of the infrared laser (Vcsel) and the receiving time of the PD, it will automatically turn on after wearing and turn off after taking out. [Bluetooth and APP control]: With the latest Bluetooth 5.0 technology, you can hear more clearly. The new exclusive application has more personalized options, through which you can adjust the volume and bass treble.. [Rechargeable]: The headset case can be fully charged within 1.5-2 hours, supporting 3 charging cycles. Full sound equipment supports more than 24 hours of hearing enhancement and more than 24 hours of music streaming.