Enjoy the comfort brought by good sound quality. Built-in DSP professional digital audio processing chip restores the KTV experience and makes karaoke easier. Fine craft speaker unit with super bass surround stereo sound. 3000mAh large capacity lithium battery provides ultra-long standby and using time. Professional tuning master allows for personalized sound effect independent adjustment. Suitable for all kinds of outdoor and indoor family scenes. Five fun voice changing modes with EFF key to switch sound effects and make K song more interesting. Functions include support for TF card, radio, dustproof, voice prompt, call function, and NFC. Specification: Model: YS-203 Interface Type: USB Frequency Response Range: 60Hz-15KHz Output Power: 10W Signal To Noise Ratio: ≥60dB Power Supply Mode: Built-in lithium battery Channel: 2.1 Play Time: 8 hours Expansion Storage: 32GB TF card (not included) Bluetooth Protocol: 5.1 Number Of Speakers: 2 Effective Distance: 10 meters Operation Mode: Button Display: None Play Format: MP3, WMA, WAV, APE Shell Material: Plastic Whether Support APP: No Radio Function: Yes Size: 20 x 26 x 28cm Weight: 0.5KG