When ready to use, simply grasp the sealed package at the grip tab provided. Bend the tab upward to release the seal. Lift and pull the tab to peel back the foil and open the package. This will activate the battery and make the device ready to use. This will most often happen automatically as part of the insertion process.
Some ear canals are fairly straight and insertion is easy.
Others may have rather severe bends and require more patience. It may also be helpful to slightly lubricate the ear canal using a drop of oil on the tip of your finger prior to insertion. Hold the hearing aid between your thumb and forefinger so that the inner curve of the shell bends toward you. Wiggling slowly allows the tip to slide in more easily. You may be able to correct this by pulling on the top of the auricle, while slowly removing the hearing aid slightly out of the ear canal, then repeating the previous step.