Our 4-channel digital technology ensures a natural sound and minimizes the background for crystal clear sound. The power indicator shows the battery status and provides up to 30 hours working time and 10 days emergency power supply in just 2-3 hours charging time. Thanks to its lightweight and discreet design, our PSAP sits securely in the channel, ensuring comfort and preventing loss. The user-friendly operation allows for effortless volume adjustment and restoration of clarity. Our easy to use and perfect for seniors is an ideal gift to bring back the joys of everyday life.Schenken Sie Ihren Lieben den und bringen Sie die Freuden des Alltags zurück. With our invisible and comfortable design, you will experience a seamless wearing experience and the love and laughter of family and friends. QualityWhat is in the box:- Pair- Rechargeable carry bag.- USB-C charging cable.- 10 - Domes- Volume tuner.- Cleaning brush.Technical data:- The maximum saturated OSPL90 is ≤120±3dB- The average high frequency OSPL90 is 110±4dB and allows for clear playback.- Full frequency gain is 30±5dB for improved sound perception.- The frequency response range is not narrower than 320Hz to 4500Hz, ensuring wide coverage of audible frequencies.- Total harmonic distortion of ≤10%.- The input level is ≤30dB, minimizing background interference.- The power consumption is ≤1.5mA, 3.7V, which ensures reliable performance.