Enjoy Your Moving Party with the Kidwill Wireless Bluetooth Karaoke Microphone Karaoke Microphone Highlights: 1.Multifunctional--Wireless karaoke microphone/Bluetooth speaker/Music player and recorder/FM radio. 2.Intelligent noise reduction design by three layers of filter head to guarantee the super voice clarity. 3.Easy connection by Bluetooth, TF card,U-disk and AUX audio connection. 4.Powerful built-in 1800mAh lithium battery. 5.Multi-function buttons, easy to use. Karaoke Microphone Specifications: 1.Non-removable lithium battery: 3.7V/1800mah 2.Charging time: 3¡À0.5 H 3.Audio playback time: About 5-8 hours 4.Maximum output power: 5W 5.Noise: ¡Ý85db 6.Maximum sound pressure level: >115db 1KHz TDH<1% 7.TF support format music format: MP3 WAV 8.TF maximum capacity: 32GB (Not including) 9.Bluetooth Transmission distance: 8-10M (26.3-32.8ft) 10.Frequency response: 100Hz~10KHz 11.Product size: About 230*55*10mm Package Includes: 1* Wireless Bluetooth Karaoke Microphone 1* Micro USB cable 1* Audio cable 1* Instruction Manual