JH - 115.Product parameters:

Jh-115 hearing aid application method: 

  1: gently open the battery compartment cover and put a button battery corresponding to the model number in the direction of positive and negative poles. 

   2: you can also choose the same specification of zinc air battery, can work longer. The batteries generate energy by touching oxygen in the air. The battery begins to discharge when the adhesive tape is removed from the battery surface, so remove the protective paper only when you need to use it. The service life of the battery can be several days or several weeks. The service life depends on the degree of hearing loss, the volume of use and the quality of the battery itself. Please replace the battery in time when the power is insufficient. 

   3: please be sure to turn off the \"o-n\" switch or adjust the volume knob to \"1\" before wearing it. 

   4: hook the ear hook on the back of the ear, and then plug the ear plug into the ear and try to plug tight. (note: the machine should be in the off state at this time, that is, the \"o-n\" switch should be in the \"O\" gear, and the volume control knob should be in the \"1\" position, otherwise, the feedback sound generated by the machine at the moment when the earphone is inserted into the ear may cause discomfort.)

   5: turn the \"o-n\" switch to \"N\", and then slowly adjust the volume knob to the clearest sound.

   6: if you feel the noise, please check whether the earplug is tight, if you feel that the earplug cannot be tight, please try another type of soft earplug.