Bluetooth wireless microphone and speaker 2 in 1, can work independently without extra connection. Portable and durable, easy to carry and use. Featured with the Bluetooth and the 3.5 mm audio jack, allow you wireless or using the audio cable to connect the unit effortlessly to your smart phones like iPhone and android phones. Great for Bluetooth, Speaker, karaoke singing, car stereo, instrument recording, interviews, podcasting, etc. Ideal for music fancier, allows you to sing and record you voice anywhere, such as in car travelling, BBQ, family dinner and outdoor party so on. Power Supply: Built-in lithium battery. Battery Capacity: 2600 m Ah Battery Working Time: 3 to 5 hrs. Professional tuning button, high pitch / bass/volume/Accompany/reverberation all can be adjusted via this microphone. High compatibility, fit for computer, smartphone, iPhone, iPad, MID, audio player with 3.5 aux in jack.