- ♫ Sound amplifier helps to amplify sound up to 30X with low background noise.
- ♫ Built-in battery, it is convenient to recharge.
- ♫ Fully charged replaceable artery can stand up to 8-10 hours continues use.
- ♫ Best hearing keep the ear tips clean and replace.
- ♫ Interchangeable ear tips to seal out the noise.