The WS858 mcrophone can be connected with the phone ar other devices via Bluetooth. The microphone has an advanced panel that allows you to change the songs you are playing, pause them, control the volume level of background melody, singing and the degree of remix of both sounds. Control pane:l record sound/change voice modulation fast forward song rewind song level for singing pause / selfie shutter release (for Android) increase volume decrease volume remix degree of sounds. Features: wireless connectivity via Bluetooth power supply: built-in rechargeable 1800 mAh two built-in speakers 5W each inputs: USB, micro USB (charging cable included) expanded control panel ability to record sounds change of voice modulation Specifications: material: aluminum, plastic output power: 5W x2 frequency range: 100Hz - 10kHz rechargeable battery: 1800 mAh charging voltage: DC 5V / 0.8A Bluetooth module: 4.1 charging time: 3-4 hours working time: about 5 hours with full battery depending on the sound level microphone dimensions: 24x7 cm weight: 400g color: gold included: microphone, charging cable via USB Warranty: 6 months