NOISE CANCELLING TECHNOLOGY: This hearing aid features advanced noise cancelling technology that effectively reduces background noise, providing clear voice and music PORTABLE DESIGN: Our hearing aids are designed to be lightweight and easy to carry, ensuring clear sound wherever SUITABLE FOR ADULTS AND SENIORS: Our hearing aids are designed for people of all ages, especially adults and seniors. They are easy to adjust and wear, providing clear sound NO MORE SPARE BATTERY-The hearing amplifiers come with a charging case (like many earbuds) that can charge the devices when away from a power source and plugs into the wall to recharge the case. The charging case can store 60 hours of standby power, which is enough to charge the hearing aids 5-6 times. Each charge supports 13-16 hours of continuous working time for the device. EASY OF USE- Simply long press the button to turn on,just fingerprint touch when change volume,no need to press button or adjust by tool. which is simple and clear and very suitable for the seniors.