Feature:1. Compatible System: Bluetooth microphone is compatible with all kinds of APP, compatible with many cell phone Karaoke live software on the market, free to sing.2. One Key Switch: Karaoke Bluetooth microphone original singing accompaniment with you to switch, the music in seconds into the accompaniment song, at any time to enjoy K songs.3. Acoustic Earphone Monitoring: Wireless handheld microphone can be real time earphone monitoring, Karaoke recording, intelligent monitoring, real time earphone, while singing and listening.4. DSP Noise Reduction: Kids microphone clearly restore the sound quality, the use of digital processing technology to restore, reduce noise, the human voice clean and clear.5. Compact and Convenient: Bluetooth handheld microphone is small and long lasting, with less than 500g weight, you can carry it around and sing for 6 hours on a full charge.Specification:Item Type: Karaoke Bluetooth MicrophoneMaterial: ABSMicrophone Built in Battery: Lithium Battery 500mAhPickup: Condenser TypeReverb Mode: Sound Effect ReverbTransmission Distance: About 10m/32.8ft (Barrier Free Distance)Operating Frequency: 2.402G-2.480GHzReceiving Sensitivity: -85dBSignal to Noise Ratio: 80dBDistortion: 3%Output Power: 8WCharging Time: About 2-3 HoursPlay Time: About 5-6 Hours.Package List:1 x Karaoke Bluetooth Microphone1 x Charging Cable1 x Sound Cable1 x Instruction Manual