Effective hearing aid: Suitable for most light to moderate hearing loss. Increasing the volume to 30dB allows for smoother conversations without repeating or screaming. Always make sure your hearing aids are dry and clean. After 2-3 weeks, you will get used to it. Battery: Put it in the charging base, just 2-4 hours, you will get more than 30 hours of use. Intelligent Noise Cancellation: The smart chip divides the sound into different channel frequencies, greatly improving processing, noise cancellation, feedback suppression and background noise cancellation. Make sure you hear clearly at different volume levels. Ergonomics Condition: Good looking, easy to determine the orientation of both devices. Clear the on/off button for easy operation. Detection in the ear: Using the latest technology, it is suitable for people with different ear canals. Put it in your ear, it turns on and off automatically. Very small and light, almost invisible, does not burden the ears with long-term use, very suitable for people wearing glasses or masks. The package includes: Hearing aids x2 Charging case x1 USB cable x1 Adapter x1 Cleaning brush x2 Packing box x1 User manual x1 Hearing Aid Caps x6 CE certified product How to wear a hearing aid? Make sure your hearing aid is fully charged. Turn off your hearing aid, switch to level 0 and select Noise Cancellation mode. Place the device close to the outside of your ears and insert the earplugs in this way to make sure the earplugs can fill your ear canal. Then turn on the hearing aid, gradually increase the volume, if the volume is within an acceptable range, you just need to take some time to get used to the device.