Features:\n- 2-in-1 Karaoke microphone with two built-in 3W speakers\n- Music streaming via Bluetooth V4.1 or AUX–IN (mobile phone, tablets, PC, etc.)\n- Compatible with various singing & Karaoke APPs\n- Equalizer function (treble, bass & echo adjustment)\n- Music & microphone volume adjustment\n- Built-in rechargeable 2000mAh battery for portable use\n- Easy to use & very stylish design The ideal fun: singing with family or friends, for ceremonies & Karaoke parties\n\nTechnical specifications:\n- Bluetooth V4.1, A2DP profil, ~8m transmitting distance\n- Output: 2x 3W stereo speakers, impedance 3Ω, SNR 80dB\n- Frequency range speaker 100Hz~10KHz\n- Maximum sound pressure level: >115dB, 1kHz, THD<1%\n- USB flash drive (FAT 32) max. 32GB\n- Music file format: MP3, WAV\n- Rechargeable 2000mAh Lithium polymer battery 4,2V Type 18650\n- Charging time ~4–4.5 hours\n- Playing time ~3.5–6.5 hours (depending on the volume)\n- Micro USB connector for charging\n- Connection via Bluetooth or AUX–IN\n- Charging voltage / current: DC 5V / 0.5A\n\nPackage contents:\n- MusicMan® Karaoke Microphone BT-X31\n- USB-to-Micro USB charging cable\n- Audio cable with 3.5mm jack\n- User Manual\n\nWeight and Dimensions:\n- Weight device: total 372g\n- Dimensions device: (L) 25 x (B) 7.3 x (H) 7.3cm; Body: (L) 6.9 x (B) 7.3 x (H) 7.3cm