About this item Powerful Noise Reduction - Dohelly Bluetooth hearing aids build-in advanced DSP chip, which have stronger noise reduction ability and deliver clearer sound. Dohelly hearing aids for seniors adults with mild to moderate hearing loss, it is a wonderful gift to help family and friends get a better hearing experience. Personalized Hearing Test - The smart phone APP connected to Dohelly Bluetooth hearing aids can be used for hearing test. Check the degree of your hearing loss and evaluate the test results to help you understand your hearing better.The hearing aids will be automatically personalized according to the test results, and you can enjoy a customized experience. APP and Buttons Control - Dohelly Bluetooth hearing aids connect to the mobile APP, and controlled from the app to adjust the sound settings, hearing modes and sound frequency. You can also be operated through the buttons on the hearing aids.The two methods are freely chosen without any tools, it is very simple to understand, and the seniors can easily learn it. Three Noise Reduction Modes - According to the noise reduction ability of the hearing aids, they can be divided into normal mode, noise reduction mode and outdoor mode. Normal mode for watching TV or daily conversation, noise reduction mode for party,in plane,or participate in activities, and outdoor mode for people who are sensitive to sound or noisy environments. All three modes can help you better adapt to your surroundings. Press the button for 1-2 seconds or connect the APP to switch modes. Rechargeable Hearing Aids - Dohelly hearing aids are equipped with a charging case, which can provide about 60 hours of backup power and charge 2 hearing aids for 2 times or so. Fully charged hearing aids can be used for more than 14 hours. Rechargeable hearing aids allow you to avoid dealing with batteries, more environmentally friendly and convenient. Comfortable Fit - This hearing aid is small in size, soft in earplugs, and won't burden the ears when worn for a long time. The invisible sound tubes bypass the top of the ears to hide the hearing aids behind the ears, which won't attract the attention of others at all and won't affect the daily wearing of glasses(Five sizes of earplugs are available) ATTENTION - The hearing aids battery can work for 14 hours when turn off the Bluetooth, but our hearing aids only work for 2 hours when turn on the Bluetooth. We suggest that you turn off Bluetooth function for extending device working time especially when you don't need to control APP or phone call. The package contains a pair of hearing aids, a charging box, a charging cable, five pairs of replacement earplugs, a pair of replacement sound tubes, a cleaning brush and an instruction manual.