Purpose This is a mid-range programmable product designed for most users. Advantages Its directional microphone and noise reduction system provide maximum comprehension and comfort in noisy environments. Further information Maximum hearing naturalness: M4 is a last-generation hearing aid, designed to adapt perfectly to the users most pressing hearing needs by offering great sound quality. It works using a broader-than-usual bandwidth, which allows for detailed analysis of sound, capacity to distinguish the different sound sources most important to the user, and sound localisation to improve understanding. Balance: M4 is the most balanced model in the Microson range. It is ideal for patients who do not want to miss out on a single decibel of their life and who seek a hearing aid with optimum features and sound quality.