Features: Color appearance,Mini bionic design. Complete joint plane, Like towear. Make the patient completely without any burden,regain confidence. Smart noise reduction, comfortable enjoy. Suitable for patients with mild to extremely severe hearing lo. Automatic tuning, small and portable. Automatic trimming technology,indoor and outdoor all applicable. Light and postble ,easy to carry. Descriptions: Supporting design helps correct bad body posture of back and shoulder. It is very breathable and comfortable to use. Specifications: Size:18x12x8mm Working voltage:1.4V Working curren:1.4mA Maximum Saturation Sound Preure(OSPL90): 118dB High frequency average(OSPL90):109dB Gain(1600Hz): 32db Input noise:28dB Distortion: 8% Frequency: 300-3500Hz Battery: 2 x A10(not included) Size: blue, red Package Included: 1 x Sound Amplifier 1 x Mini tool 1 x Clear brush 3 x Silicone Adjustable Tips Please Notes: 1.Please allow slight dimension difference due to different manual measurement. 2.Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you