Feature:1. Clear Sound: Listening amplifier has a clear sound quality, which present the original sound for you. No matter when and where you can hear all sounds clearly.2. Silicone Ear Tip: The earplug is made of food grade silicone, which is comfortable to wear, easy to remove, and environmentally friendly.3. Portable Desgin: Sound listening amplifier is small, lightweight, ergonomically designed and portable. It can be easily put in your pocket.4. Volunme Control: You can adjust the volume at will according to your own needs, please turn the volume to 1 when turn it on, so as not to feel uncomfortable.5. Excellent Material: Made of excellent ABS material, hard and durable, not easy to damage. It feels comfortable and can be used continuously for a long time.Specification:Item Type: Sound AmplifierMaterial: ABSBattery: 1 x AA battery (not included)Product Characteristic: Small and portable, clear sound quality, intelligent noise reduction, comfortable to wear..Package List:1 x Host1 x Earphone Wire2 x Ear Plug1 x Manual