Features 1、Hearing Aid: Suitable for all kinds of people with poor hearing. Excellent sound quality and comfortable listening. Specially designed for the hearing impaired. 2、Good Wearing Experience: The sounds is natural and clear, which will provide you with a wonderful experience, it will not feel pain even if worn for a long time. 3、Volume Adjustable: You can hear clear sound in different volume environments. Comfortable volume in incremental model, prevents ear irritation from sudden increases in sound. 4、Practical: Small behind the ear sound amplifier is designed to be practically invisible and very light weight, convenient for watching movies, watching plays, attending conferences. 5、Rechargeable: Rechargeable hearing aid with fast charging speed, no need to change the battery frequently. Put it in a small charging box, which is easy to carry and go out. Specification Item Type: Hearing Aid Material: ABS+Silicone Maximum Saturation Sound Pressure Level (Db): ≤ 112+3db High Frequency Average (Db): ≤128±4db Full Range Sound Gain: ≤40±5db Frequency Response Range: 250hz~5000hz Total Harmonic Distortion: ≤3%+3% Equivalent Input Noise Level: ≤26db Current Consumption: ≤5ma Battery Model: H40 Charging Time: 2-3 hours Use Time: About 35 hours (Fully Charged) Charging Case Can Be Recharged: 4-5 times (Fully Charged) Package List 2 x Hearing Aid 1 x Charging Case 2 x Clean Brush 8 x Silicone Ear Tip 1 x Instruction Manual 1 x Data Cable