Feature:1. Premium Material: Hearing amplifiers are made of medical grade silicone, non toxic and tasteless, anti aging, wear resistant, and highly resilient.2. Superior Sound Quality: Hearing amplifiers using imported chips, excellent sound quality, stable transmission, prevent whistling and reduce noise.3. Bionic Design: Hearing amplifier aid adopts skin color shape, bionic design. Ergonomic design, fit the contour of the ear, not easy to fall off.4. Universal to Use: Hearing amplifier aid comes with different sizes of earplugs to fit everyone. The small size and light weight make it stress free to wear.5. Restoring Hearing: Digital hearing aid helps you to restore your hearing and resume your normal life, watching movies, music and TV shows etc.Specification:Item Type: Hearing AmplifierMaterial: ABSMaximum Sound Output: 1153dbGain of Hfa: 28db5dbTotal Harmonic Distortion: 5%Frequency Range: 260-5000HzNoise: 32dBCurrent: 2mAType of Earphone: Lithium BatteryHeadphone Battery: 35mAh (included)Battery in Charging Compartment: 300mAh (included).Package List:2 x Hearing Amplifier4 x Ear Cover1 x Manual1 x Charging Line1 x Charging Bin