Item Type: BT Handheld MicrophoneMaterial: ABS, MetalMicrophone Built in Battery: Lithium Battery 2000mahPickup: Condenser TypeReverb Mode: Aftersound Effect ReverbTransmission Distance: About 10m/32.8ft (Barrier Free Distance)Operating Frequency: 2.402G-2.480GHZReceiving Sensitivity: -85dBSNR: 80DBDistortion: 3%Output Power: 6WCharging Time: About 3 HoursPlay Time: About 5 HoursPackage List1 x BT Handheld Microphone1 x Charging Cable1 x Sound Cable1 x Instruction Manual1[DSP Noise Reduction] Bluetooth handheld microphone using digital processing technology to reduce noise, clear restoration, clean and clear vocals, better record the sound quality of each song. 2[Ear Monitoring] This Bluetooth karaoke mic supports real time ear monitoring, recording your singing, so you can listen while singing and grasp every detail. Suitable for KTV, home parties, etc. 3[Tuning] With independent reverb sound, KTV grade surround sound, through the space reflection of the sound to achieve the reverberation effect, to further beautify the singing. 4[Widely Compatible] Wireless handheld karaoke mic intelligent compatible with a variety of mainstream software and systems, suitable for a variety of cell phone Karaoke live software. 5[Easy To Use] This wireless singing microphone supports one key to eliminate the original sound and switch at will, which allows the music to become the accompaniment song.