Onboard 5V 1A switching power supply (input 24V): provides stable power from 24V sources for reliable operation. AUX interface, plug and play: easy connection to compatible devices with no complex setup. Stereo lossless sound quality with speakerphone and automatic callback: clear, natural audio for calls; hands use with an automatic callback function. Working range up to 10 meters in open areas: flexible placement and movement during conversations. Charging and power supply: microUSB port provides 5V power; red LED lights during charging and turns off when fully charged. Key benefits Improves call clarity with stereo audio and a builtin speakerphone for hands conversations. Quick and straightforward setup thanks to the AUX interface and plugandplay design. Flexible usage with a wireless range of up to 10 meters, enabling placement away from the host device. Simple charging status indication with a red LED that shows charging progress and full charge status. Compatibility and connectivity AUX interface supports direct connection to compatible devices via the AUX path. Power is supplied through the onboard regulator from 24V input to 5V output, ensuring stable operation. Use scenarios Small team conference: place the unit on a meeting table, connect via AUX to a computer or conferencing device, and use the speakerphone for clear, hands discussions. Home or office desk: connect to a PC or laptop via AUX for enhanced call quality during video conferences or calls, with the convenience of wireless range up to 10 meters. Classroom or training room: use in a semiopen space where presenters or participants move around; the device maintains clear stereo audio and convenient automatic callback functionality. Technical notes The device relies on a 24V input with an onboard 5V 1A switching power supply. Charging status is indicated by a red LED: on during charging, off when fully charged. The AUX interface enables immediate, plugandplay connections without additional drivers.