Audiomatic Premium Quality Wireless Bluetooth WS-858 Microphone. MIC Recording Condenser Handheld Microphone with Speaker for Cellphone Karaoke. Best for Holiday Festival Journey Wireless karaoke Supply power: How to Use:- Hold button to start the product. Wireless connection: Enable the Wireless of mobile phone, click to connect, successful connection if prompt tone is produced. Adjust sound: adjust the sound volume of mike and the reverberation to suitable level. Start karaoke:Recording with mobile phone o Connect the recording wire: insert the MICRO plug of the recording wire into the MICRO interface of karaoke treasure, and the 3.5mm interface info the earphone jack of the mobile phone. Open the karaoke software in the mobile phone, such as: USING, kugou music or other recording APPs, select your favorable song, record the song according to the above mentioned singing method. Test and save the song: according to the instructions of karaoke software. Specification : 1. Output Power: 5W. 2. Frequency Range: 100Hz~10 KHz. 3.Max Sound Pressure Level: >115db 1 KHz TDH <1%. 4. Reverberation Mode: Sound effect reverberation. 5. Power Supply: Built-in 18650 Li-battery. 6. Battery Capacity: 1800mAh. 7. Charging Power: DC 5V. 8. Color: Multi Color’s. 9. Size: 20 x 7 x 7cm. Package included : 1 x Microphone. 1 x Charging Cable. 1 x Audio Cable.