1. Fully compatible design: This live sound card features a universal compatibility design, allowing easy connection to both mobile phones and computers to meet all your live streaming and singing needs. It supports OTG digital lossless transmission technology to ensure the quality sound output, delivering clear and pleasant audio effects in various scenarios. 2. Builtin battery for performance, worry charging: Equipped with a 3.7V/1200mAh capacity battery, this soundboard provides up to 6 hours of continuous use with the amplifier on, eliminating power concerns. It also supports charging while in use, so you can keep it powered even during live broadcasts or performances. 3. Comprehensive sound control for needs: This audio mixer offers versatile sound adjustment options, including /lowtone tuning, accompaniment, reverb, recording adjustment, and microphone volume control. You can adjust the sound effects to suit your preferences and create a unique audio experience. 4. Multifunctional button design with rich sound effect options: Featuring 7 function buttons, 9 sound effect buttons, and 15 special effect buttons, this sound card mixer provides a wide range of audio options for your live streams or performances. It also includes a BT switch for quick and easy Bluetooth device pairing.