Cables and batteries while recording are no longer necessary with the BY-V10. The transmitter with built-in microphone clips onto the clothing of the person you want to capture. The built-in battery provides up to 9 hours of power. The sound is recorded by your Android device. For this you plug the receiver into the USB-C port of your Android device. The BY-V10 is immediately ready to be used; both with audio and video apps. You simply start your video recording with the standard Android app. This way, your recordings are automatically provided with sound from the microphone.