Features 1.Made of high quality ABS material provides a comfortable and skinfriendly touch, nontoxic and safe. 2.The ergonomic inear design can better fit your ears, perfect and comfortable. 3.High quality builtin chip will provide crystal clear sound quality and enhanced noise reduction. 4.The builtin battery can be directly powered by the charging box, provided to maximize the charging for your hearing aid for 4 times, and the LED light can directly and clearly show the working status. 5.Support for a button control that allows simple power on/off and sound Settings, as well as three different ear plugs with S/M/L size variations can work widely on different users. Specification Condition: 100% New Item Type: Hearing Aid Material: ABS+Silicone Color: As Pictures Shown Weight: Approx. 171g/6oz Maximum OSPL90: 120dB + 3dB High Frequency OSPL90:103dB 4dB Average Gain: 23dB 5dB Equivalent Input Noise Level: 35db Total Harmonic Distortion: 10% Frequency Response Range: 300Hz ~ 3500Hz Rated Power Consumption Current: 6mA Working Hours: 12-15 Hours Charging Time: 90 Minutes to 2 Hours Usage Time: 10-12 Hours Working Current of Charging Box: 70mA Working Voltage of Charging Case: 3.7V Charging Time: 90 Minutes Charging Current of Hearing Aid: 30mA Hearing Aid Charging Voltage: 4.2V Hearing Aid Charging Time: 3-4 Times Battery: Polymer Lithium Battery ( Earphone 30mAh, Charging Case 120mAh) High-tech charging mode: connect USB to the charging case and make it completely charged. When charged, the light turns blue. The charge fills up and the light turns white. Portable, USB charging. Six sound levels are adjustable: each time the sound level rises, you'll hear a "beep" sound. At full volume, you'll hear three "beeps" and sound. If pressed again, it returns to its lowest level. Package List 2 x Hearing Aid (Left, Right) 1 x Charging Box 1 x USB Cable 6 x Ear Plug 1 x Cleaning Brush 2 x English Manual