Don’t need app or bluetooth: Just plug the transmitter into the devices and they will auto pairing connect.

Charging Tips: Please remove the protective partition that comes with the microphone after receiving the product. This protective partition is usually placed at the charging port of the microphone to prevent dust, dirt, and other substances from contaminating the charging port. After removing the protective partition, you can connect the microphone to the charging case and start charging.

Grenaro This wireless mic for YouTubers, wireless mic is using DSP intelligent noise reduction chip to achieve manual adjustable 3 level noise reduction and provide professional full-band audio CD quality, whether you are in a quiet indoor or noisy outdoor, you can select different level according to the using environment. ???: Wireless microphones is compatible with Android

2 x Wireless Microphone Transmitter, 1 x Type-C Receiver, 1 x 1 USB to 2 Type-C Cable, 1 x Digital Display Charging Case, 1 x User Manual (English)

Super-Long Operating Distance: Using 2.4GHz wireless transmission technology. With a delay of only 0.009s and strong penetrating power, so that barrier-free up to 20 meters.

Yes

Wireless microphones is compatible with Android smartphones, tablet with Type-C port, tablet with USB-C port (Supports OTG function) to meet your different requirements in need. (Not Include Micro USB Port )

Wireless Microphone with Digital Display Charging Case