3 Fun at singing via Youtube and compatible with various singing & Karaoke APPs Bluetooth V4.2, A2DP profil, ~10m transmission distance Bluetooth transmitting frequency 2.4GHz Max. radiated output power 2.5mW Output: 1x 3W speaker, SNR < 80dB, impedance 4 Frequency range speaker: 100Hz~10KHz Maximum sound pressure level: >115dB, 1kHz Distortion factor: THD<1% MicroSD card slot up to 32GB (FAT32) Built-in rechargeable 2000mAh lithium polymer battery Type 18650 3.7V Charging time: ~44.5 hours Playing time: ~22 hours (medium volume, Bluetooth) Connection via Bluetooth or AUXIN Micro USB charging connector: voltage DC 5V/current 0.5A Compatible also with MusicMan BT-X35 TWS function (simultaneous fun at Karaoke via 2 microphones from one Smartphone) Package content: MusicMan Karaoke Microphone Kids BT-X36, USB-to-Micro USB charging cable, AUX cable with 2x 3,5mm jack and manual Dimension (WxDxH): 75x35x220 mm Weight: 200g