Un-Tech WS-858 Rechargeable Wireless Karaoke Bluetooth Microphone With Inbuilt Speaker with Audio recording For All IOS/Android Smartphone (Color May Vary) Wireless bluetooth WS-858 microphone KARAOKE MIC recording condenser handheld microphone stand with speaker for cellphone karaoke for holiday festival journey wireless karaoke Supply power: hold button to start the product. Wireless connection:- enable the wireless of mobile phone,Successful connection if prompt tone is produced. Adjust sound:- adjust the sound of mike and the reverberation to suitable level.Start karaoke:- Recording with mobile phone 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.multi colour 9. Size: 20 x 7 x 7cm. 10.Package included : 1 x microphone. 1 x charging cable. 1 x audio cable.