There is a K button on the mic that if long pressed, will give the Karaoke or reverb/ echo effect. To disable it, long press the K button again.
The noise cancellation button has 3 levels, ranging from 1 being the lowest and 3 being the highest degree of cancellation. You don’t need any noise cancellation during your indoor shoot but when you have outdoor shoot, level 1 can be enabled for the ideal results.
For apple devices, relevant OTG converters will have to be purchased separately, not provided in the box. For Type- C phones, cable is provided in the box that ensures the compatibility with the phones with Type C connection but it may not happen in some devices after recent software updates. Try downloading the external apps in such cases like Open camera/ HD camera.
No, they are the 2.4Ghz mics. They are not the bluetooth mics, we have given bluetooth technology to enable the users to give background music from their phone so that they can do karaoke. After a long press of the power button on both the mic and the receiver, the devices get paired automatically.