Rechargeable Sound Amplifier Noise Cancellation Clear Volume Adjustment Hearing Aid Headphones 100?240V US Plug

VOLUME ADJUSTMENT: Rechargeable sound amplifier is a great choice. You can adjust the volume as you like while watching TV and movies, attending meetings or classes.
NOISE CANCELLATION: Input noise is less than 30dB with less than 5% harmonic distortion, and the N H mode switching and microphone and hearing aid separation design help reduce noise.
H MODE AND N MODE: Hearing aid headphones provide clear sound outdoors in H mode and a more comfortable experience indoors in N mode to meet your different usage needs.
EQUIPPED WITH EARMUFFS: Digital hearing aids come with 4 different shaped earmuffs and 4 replacement earmuffs for a snug fit for different ear types without worrying about dropping or losing them.
LOW CURRENT AND POWER SAVING: Hearing aids have a built in lithium battery with a capacity of 120mAh, which can work continuously for about 20 hours after a full charge, featuring low current and power saving.