Features 1.REAL TIME EAR MONITORING: Bluetooth handheld microphone supports real time ear monitoring, listening while singing, grasping every detail. 2.FREE SWITCHING: Wireless kids microphone eliminates the original sound with one click, and the original singing accompaniment can be switched at will. 3.PROFESSIONAL TUNING: Portable handheld microphone uses professional tuning, independent reverb sound, KTV level surround sound. 4.NOISE CANCELING FILM: Kids microphone is equipped with noise reduction film, further beautifying the singing voice, so that your voice is always clear and clean. 5.INTELLIGENT COMPATIBILITY: Bluetooth microphone intelligent compatible with a variety of APP, mainstream software and systems can be used, free to sing. specificationItem Type: Bluetooth Microphone Material: ABS Microphone Built In Battery: Lithium Battery 2000mah Pickup: Condenser Type Reverb Mode: Sound Effect Reverb Transmission Distance: Approx. 10m/32.8ft (Barrier Free Distance) Operating Frequency: 2.402G-2.480GHZ Receiving Sensitivity: -85dB Signal To Noise Ratio: 80DB Distortion: 3% Output Power: 8W Charging Time: About 3 Hours Play Time: About 5 Hours PackageList1 x BluetoothMicrophone 1 x Charging Cable 1 x Sound Cable 1 x Instruction Manual