ALPS International manufactures Completely-In-the-Canal Hearing Instrument. ALPS International is an ISO 9001:2000 certified company. Completely-In-the-Canal Hearing Instrument is almost invisible in the ear and restricted to people with ear canals large enough to accommodate the insertion depth of the instrument into the ear. It uses a very small battery that requires good manual dexterity. Completely-In-the-Canal Hearing Instrument is not suitable for people with severe hearing losses. It is available in six models.