Amp is a standard hearing aid that is inserted deep into the ear canal making it virtually invisible. Features: device – plastic injection molded; creates dimensional stability, elasticity, resistance to scratches, chemicals and cracking. Sleeve – liquid injection molded. Provides tear and high tensile strength; dishwasher safe. Easily cleaned collection chamber protects from wax build-up. Paired with a magnetic wand that is the battery removal tool and on / off control. Raised ribs on the housing create an acoustic and environmental seal.