Features 1、The size of the hearing aid host machine is 65×37×13mm, which makes it easy to store and carry. 2、There are two modes in this hearing aid, one is general mode, the other is silent mode, the default is general mode after boot. 3、Intelligent noise reduction, automatically adjust the sound to the comfortable range, so as to protect the hearing and sound more real and delicate. 4、Large power design, suitable for 120dB hearing loss crowd, practical accessories. 5、External audio interface, convenient audio input, separate volume adjustable. Specification Condition: Brand New Item Type: Hearing Aids Material: Plastic Host Size: Approx. 6.5 x 3.7 x 1.3cm / 2.6 x 1.5 x 0.5in Scope of Application: Applicable to hearing impaired people Maximum Saturation Sound Pressure Level: ≥135dB Full-Gear Sound Gain (hf average gain) : ≥65dB Harmonic Distortion: ≤7% Equivalent Input Noise: ≤25dB Frequency Response Range: 300Hz--4600Hz Rated Current Consumption: ≤2.1mA Power Supply: 1pc AAA battery (Not included) Usage: 1. Select a suitable earplug and insert it into the receiver 2. Insert the receiver wire into the receiver (pay attention to the size of the two holes on the receiver) Plug the receiver cable into the USB port on the hearing aid 4. Place a receiver with earplugs in the ear Notes: 1. Power on: push the "on" key upward, and the delay of the "on" will be 3 seconds. Make sure that the sound adjustment is in the minimum state when starting to use 2. Power off: turn down the on key and turn it off when you do not use the hearing aid 3. High volume will cause injuries. Please make sure that the volume control button is in an appropriate position before turning on 4. Adjust the volume by moving slowly until it reaches the most appropriate volume Package List 1 x Receiver 1 x Host 3 x Earplugs 1 x Hanging Rope 1 x Description 1 x Screwdriver