Feature 1NOISE CANCELLING: Features the latest dual noise reduction, amplify sound while reducing unnecessary background noise for a clear hearing experience. 2MULTIPLE FUNCTIONS: One click operation to achieve volume control, listening mode switching, hands free calls, which is very suitable for hearing impaired people. 3EASY TO WEAR: Comes with soft earplugs, ergonomically designed to fit tightly into the ear canal for easy wearing. Suitable for the elderly and adults. 4RECHARGEABLE: Charging case built in 300mAh lithium ion battery, single earphone built in 30mAh battery, easy to charge, applicable for shopping, travel, etc. 5ABS MATERIAL: Sound amplifier device adopts excellent ABS material, safe and eco friendly, firm and sturdy, anti impact and stable, wear resistant and durable.Item Type: Sound AmplifierMaterial: ABSCharging Case Built In Battery: Lithium ion battery 300mAhSingle Earphone Built In Battery: 30mAhScope of Application: Very suitable for the elderly and adults .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }Package List1 x Pair of Sound Amplifier4 x Earplugs1 x USB Cable1 x Manual1 x Charging Case