TruHearing TH 6 RIC LI T Right and Left Ear Receiver in Canal Hearing Aids. The receiver is connected to the instrument via a receiver cable. A power cell (lithium-ion rechargeable battery) is permanently built into the hearing instrument. This enables easy charging with Charging station R. The wireless functionality enables advanced audio logical features and synchronization between your two hearing instruments. These hearing instruments feature Bluetooth low energy technology allowing for easy data exchange with your smartphone and for seamless audio streaming with your iPhone. Also for some Android smartphones that support Audio Streaming for Hearing Aids. Besides the 2 Hearing Aids, included are: a Connect Charging Station and User guide, a carrying case, 5 Connexx batteries, User Guide 1-Safety Manual for Hearing Aids, User guide 2- Preowned, worn sporadically for a year. Still work well. No problems noted.