Don't miss out on life! Discreet and powerful, with this Hearing Aid there is no need to replace batteries, in fact no batteries are needed as it's rechargeable. The additional extra comfort ear buds gives extra comfort and ease of wearing .The micro electric sound process system provides you with a feedback-free hearing aid. Uses rechargeable nickel-metal hydride (NiMH) battery for longer life. Dual charger. Great for home use and office use or on the go. Extra ear buds can be stored in the storage compartments.