The Monoprice Bluetooth Headphones with Transmitter Charging Base is the perfect solution for high quality wireless audio streaming for home, office, or travel. When used as a standalone pair, the headphones provide high quality wireless streaming from your phone or other device at distances up to 32 feet (10 meters). However, when paired and bound with the included transmitter charging base, you can enjoy wireless streaming at distances up to 98 feet (30 meters), giving you much greater freedom of movement than other Bluetooth headphones. The charging base includes both 3.5mm stereo analog and digital optical audio S/PDIF inputs, allowing you to stream from non Bluetooth devices, such as your home audio system. The headphones and transmitter charging base support the SBC, FastStream, Qualcomm aptX, and Qualcomm aptX Low Latency audio codecs for crystal clear audio streaming and synchronized audio for video transmissions. Multipoint Pairing allows the charging base to be paired with a second pair of headphones or Bluetooth speakers.