Feature: 1.Multipurpose: Bluetooth speaker, KTV singing, Gathering singing, Family singing, Travel singing, Car Stereo, Instrument Recording, Interviews and Live. Also, it's a Unique Gift for your Friends or Family 2.Multi-function buttons can adjust the Music, Echo, microphone Volume.Free to switch the previous and next song mode.Adjustable echo length effect can bring super surround with immersive enjoy. Supports Micro TF SD Card, So You can play music and sing without smartphone. How to use: 1. Turn on the microphone by pressing the "POWER" button for 2 seconds. The microphone is ready when you hear a sound of drop. 2. Initiate Bluetooth function of phone and search for Bluetooth device 'WS-858' for completing pairing. 3. Follow and Play the song list in your cell phone as you wish. 4. Long press the corresponding buttons (VOL+& VOL-) to adjust the volume. 5. Plug in the 3.5mm audio cable to record your songs and your records will be stored in your phone. Note: The recording will be saved in your mobile app, not in the microphone. Specifications: Output Power: 4W * 2 (Speakers) Connection: Bluetooth and Audio Cable Battery Capacity: 1800mAH Charging Voltage: DC 5 V Charging Time: 3-5 hours Operating time: 5-8 hours