Our wireless bluetooth microphone is handheld portable and reliable for all your karaoke needs. The wireless microphone with colorful dynamic led light flash with music change when singing. Specifications: Output Power: 5W Product Weight: 0.66lbs Battery Capacity: 1200mAh Charging Voltage: DC 5V/1A Frequency Range: 100hz-10khz Reverberation Mode: Echo Effect TF Card: 32GB MAX (Not Included) Maximum Sound Pressure Level: >115dB 1KHz Thd<1% Package List: Charging cable *1 Microphone *1 Audio cable *1 Manual *1 Warm Reminder: 1. The microphone will be connected automatically after the first connection. 2. If you want to disconnect the microphone turn off bluetooth on your phone or delete device records from your Bluetooth management list. 3. If you only want to listen to the song minimize the volume of the microphone.