Ultra-thin design. The size of a mobile phone, this lightweight device combines a sound card and a headset, allowing you to broadcast live anytime, anywhere. Equipped with intelligent noise reduction and one-key bel canto. Intelligent sound modification minimizes external interference, enabling a noise-free singing experience. Features 13 electric tones. In electric mode, you can adjust 13 tones, providing various singing options. Nine live control settings. 9 kinds of warm-up options for live use at the touch of a button, effortlessly enhancing the live streaming atmosphere with engaging features. Five categories of professional adjustments for treble and bass. For adjustment modes: accompaniment, phone, monitor, and reverberation. Original sound cancellation function, a core feature for live streaming. When the host speaks, the music volume automatically lowers. The music resumes normal levels once the host stops speaking. The elimination feature removes vocals from songs, retaining only the melody for karaoke. Preset voice modes such as male to female, female to male, child voice, live voice, and shouting for more realistic sound effects. Bluetooth-compatible for accompaniment transmission. High-quality Bluetooth transmission eliminates the hassle of "wired" connections, making live singing more convenient and freeing. Turn on Bluetooth on your mobile phone, search for and connect to the K9 to pair successfully. The Bluetooth indicator lights up, allowing you to use your mobile device to play accompaniment music and transfer it to the sound card easily for an enjoyable music experience. Compatible with Android, mobile phones, and PCs, regardless of brand or model. Simply plug and play. Model: K9 Style: A: Sound card + audio cable + data cable / B: sound card + directly inserted microphone + audio cable + data cable + monitoring earphone + carrying case Reverberation mode: DSP Type: Sound card Power supply: high-capacity lithium battery Battery capacity: 1036mAh Charging voltage: DC5V Working time: 12 hours after a full charge Supported devices: Android devices, mobile phones, PCs, tablets Support modes: chat, singing, KTV, electric sound, shouting, reverb, voice changing, original sound Size: 151 x 76 x 12 mm / 5.9 x 3 x 0.47 in Color: black Material: plastic Package Contents: 1 * Voice Changer 2 * Audio Connecting Cables 1 * USB Charging Cable 1 * Earphone 1 * Microphone Only the above package contents are included; other products are not included. Note: Lighting and different displays may cause the item color to differ slightly from the actual product. The allowed measurement error is +/- 1-3cm.