Key benefits Plug and play with mobile phones: no setup, no apps, just connect and use. Strong volume boost: phone speaker output can be up to 5x louder, with 3x to 5x amplification to deliver clearer, fuller sound. Enhanced listening experience: boosts audio to improve the overall audiovisual perception and immersion. Fast, reliable pairing: no cumbersome configuration, onesecond link for quick connection. What it is and how it works Compatibility and use: designed for use with mobile phones, plug in and you are ready to go. Convenience: no extra settings required, enabling a timesaving, straightforward experience. Size and materials Size: not specified by the manufacturer. Material: not specified by the manufacturer. Performance notes Function: external sound amplification to enhance phonebased audio. Amplification range: 3x to 5x, with overall loudness increase up to 5x for compatible devices. Pairing: onesecond link, quick and effortless connection. Use scenarios Small outdoor gatherings or travel: use a phone as the audio source for music or video and achieve louder, clearer sound without external speakers. Classroom or meeting setting: amplify the phone's audio during presentations or videos to improve audibility for attendees. entertainment: watch videos, play games, or enjoy media on a phone with enhanced sound for a more immersive experience.