【2-in-1 Hearing Aid/Bluetooth Mode】 Simply take the hearing aid out of the charging case and place it in your ear. It will automatically turn on, and after waiting about 3 seconds, the hearing aid mode will start. Press and hold the left or right earphone for 3 seconds to switch to Bluetooth mode. After connecting to Bluetooth "Aid2", you can use your mobile phone to adjust the volume, enjoy music, videos, etc. It also supports answering/rejecting calls. (Note: The hearing aid function is not available in Bluetooth mode.) 【5-Level Volume Adjustment】 Enjoy 5 levels of volume (20%, 40%, 60%, 80%, 100%). Click the left or right side to adjust the volume of the hearing aid. The volume changes in 5 steps from low to high. You will hear a beep at the maximum volume. Also, it is equipped with a feedback suppression function to prevent annoying mechanical noise when wearing the hearing aid. (Note: In Bluetooth mode, adjust the volume from your mobile phone.) 【Type-C Fast Charging & Power Remaining Display】 Our rechargeable hearing aid can be used continuously for 9 hours on a full charge, and the charging case has a built-in large-capacity battery that can provide more than 50 hours of additional use for the hearing aid. The charging case is equipped with a Type-C port that supports fast charging, allowing for faster charging and a full charge in just 60 minutes. When the charging case is fully charged, it can charge the hearing aid about 5 times. In addition, the remaining battery level of the charging case is displayed numerically on the LED display, making it easy to see the remaining battery. 【Comfortable Fit & Invisible Wear】 Adopting the same appearance design as Bluetooth earphones, it is simple and fashionable, and equipped with touch control, allowing you to experience the same fashion style as the younger generation. It fits the shape of the ear very well, providing a comfortable fit and size, without putting any burden on the ear, and you won't feel the weight even when wearing it. You can use it comfortably without worrying about dropping it while moving. A warm present for parents and family, perfect for Respect for the Aged Day, Mother's Day, and Father's Day. Note: In daily life, be sure to remove the hearing aid when washing your face, washing your hair, bathing, and swimming, and place it in a dry place. 376