Electronic health products 1-Open fit tube: Use an ergonomically designed thinnert ear tube that is hard to find when worn! Reduce the fear of discrimination against deaf patients and Improve the clarity of the sound! 2-Volume adjustment: Method Rocker Can adjust to the audio you adapt when you wear it. 3-The average volume of 106dB±4 avoid cushioning effect of the impact sound to protect the ears. 4-10 level gears can meet different levels of hearing people 5-Suppressing the plugging effect Appearance: The D26 is equipped with a hollow earplug, which is much easier to adapt and comfortable to wear in long time, in the meanwhile, enhancing the fidelity of the sound. 6-Low battery reminder The elderly will be reminded in case hearing aid suddenly stop working work which could cause trouble. 7-40h working time could reduce the trouble of charging every day 8-Automatic noise reduction function 9-The highest and lowest tone sounds alarm are used to avoid the situation that the guest over-damages the machine because the sound is not loud enough. 10-Volume memory function has to reduce the memory level and re-adjust troubles every day.