Single-ear wireless headset. Convenient Multipoint compatibility for seamless switching. You can connect two Bluetooth devices seamlessly without troublesome switching. It may not be supported depending on the device. Calling, music playback, and other operations cannot be performed at the same time. The high-performance battery provides up to 20 hours for talking and listening to music, which exceeds common daily use. HD Voice requires that the call line and both call devices are supported by HD Voice. Voice-assistant may not be supported depending on the specifications of the connected device. Enjoy hands-free communication with HD Voice for high quality clear voice reproduction. The HA-C300 is also voice-assistant compatible. HD Voice requires that the call line and both call devices are all supported to by HD Voice. Voice-assistant may not be supported depending on the specifications of the connected device. Soft ear piece for maximum comfort when using for an extended period of time. Removable ear hook included for added security.