Plug and play operation Simply plug it in and you can use it immediately; the phone's loudspeaker becomes five times louder, helping to reach the audience more effectively. Quick setup and pairing Upgraded and plug and play: no settings required, convenient and time saving. Onesecond link for pairing; eliminates cumbersome steps and makes setup fast. Enhanced sound performance Five times amplification to increase the sound output. Improves the audiovisual experience and helps the listener feel more immersed in the scene. Compatibility and usage Designed for plug and play with compatible devices; no additional software or complex setup required. No settings needed and quick connection to enable immediate use. Use scenarios Small meetings, classrooms, and presentations where enhanced voice projection is helpful. Outdoor gatherings or informal performances that benefit from louder, clearer sound. Video recording or home entertainment setups where clearer, more immersive audio is desired. Notes Size and material information are not specified in the provided description.