Doosl Hearing Aid for Ears, Rechargeable Hearing Aid for Seniors, Personal Sound Amplifier Devices for Adults

Better Technology: It is designed with feedback compression technology, use the newest structural design to minimize feedback. Better Chip: Inside DSP intelligent environmental noise reduction chip. They can capture missed sound with maximum clarity provides you clear and natural sound. Superior Construction: This hearing amplifier is tiny to perfectly fit in your ear canal. The sound amplifier has no direction, so you can change the position you're wearing. A smart button to adjust volume/program, 9 volume levels and 3 programs, fit all people and very comfortable. Easy to Charge : Type-C Fast Charging, Limited Charging Current Protection System, which makes your charging safer and more convenient. Battery lasts 25 hours after full charge. 5 to 10 times charging with portable case. Charge anytime and anywhere. Specifications:Name: Hearing DeviceMaterial: ABS +siliconeMax sound output: 125+/- 3 dBSound gain: >= 28 dB+/- 5 dBTotal harmonic wave distortion: <= 3%Frequency range: