Sell Ready Stock ✩1 Pair Mini Hearing 助听器 Aid Rechargeable Hearing Aid 2PCS Carrying Charge Box Sound Amplifier Hearing Assis best price

Product details: Maximum OSPL90≤117dB+ 3dB High Frequency Average OSPL90:109dB士4dB Full range Acoustic Gain (Average gain): 25dB Equivalent input noise Sound level :≤29dB+3 Total harmonic distortion:≤7% Frequency response range (not narrowly) :400Hz~4500Hz Rated power supply Curent consumption:≤6 Charging line currentand voltage:4.2V,≤30mA Ear warehouse specification: long:5.8CM/2.28inch high:2.6CM/1.02inch width:3.8CM/1 49inch Feature: Binaural design:Let you better identify the direction of sound Removable charging:Charging time: 2 hours / time;Lasting time:30 hours Ultra-Small, ear fit, comfort and not slip off Carry anytime:carry charge box,charge anywhere and anytime. One-key operation, easy to use Operate: 1.press and hold 3 seconds to turn on/off 2.Click to adjust the sound Instructions: 1.Clean the ear canal before use. 2.When using it for the first time, please turn the volume to the minimum and then slowly increase it. 3.Try and select suitable ear dome. Install the ear dome and make sure it fits snugly. 4.Insert the hearing aid into the ear canal,adjust its position in the ear canal until the soft eartip is fully deployed and fill the ear canal. Note: 1.If the earbuds cannot fill the ear canal, it may cause feedback or whistler,So repeat step 4 to reduce howling and noise. 2.Normal hearing person can not experience the real effects of hearing aids.If it is not purchased for yourself,please help the user use and adjust it. 3. Please use the matching charging cable to charge the product, otherwise it may damage the product. 4. If you need to use a replacement charging cable, please use the charging cable suitable for the product. If you use an inappropriate charging cable to charge the product, it will cause damage to the product. Products include: 2 * hearing aids 1 * charging case 1 * charging cable (excluding charging head) 4 * earmuffs 1 * cleaning brush 1 *instruction manual(Please make sure has read the manual before use)