Noise Cancellation Technology Due to the built-in DSP high-performance chip, this wireless microphone can provide you with a variety of modes to choose from, original sound mode, 3-level noise reduction mode and KTV reverberation mode. You can select the most suitable mode according to the video recording scene. P.S. After turning on the microphone, the three-level noise reduction mode is automatically turned on. Are you still worried about the phone or ipad running out of power during use? This wireless lav mic has a lighting port on the receiver, which support connecting to your power bank or socket. Features & details [DUAL MICS & RECORD MULTIPLE SOURCES] This wireless lavalier microphone pack includes two mini microphones that support omnidirectional audio, which makes it the ideal mic solution for multi-person interviews and small studio operations. [UPGRADE 2.4GHz TRANSMISSION TECHNOLOGY & LOW LAGENCY] The Hiievpu wireless microphone comes with high-performance chip and upgrade 2.4GHz transmission technology, which makes your video recording stable and 0.009s low latency possible. [3-LEVEL NOISE REDUCTION & SHARP AUDIO AT DISTANCE] This wireless lapel microphone performs well in complex environment. Built-in 3 level noise reducing function, superior stereo audio, which allows for clear and natural sound recording at 65ft/20m distance range. However, when there are obstacles such as walls, the effective distance will be affected to a certain extent. [PLUG & PLAY AND AUTO PAIRING] Connection is a snap. No App or Bluetooth required. You just need to plug the receiver into your iPhone/iPad, then turn on the lavalier mic, then you can use it within seconds. The compact design maximizes your recording convenience, and you can hold it by hand or clip it to your shirt. [CHARGING CASE INCLUDED & ALL-DAY RECORDING] Excellent product design achieves small size and long battery life. While ensuring product portability, by gf enjoy 7 to 12 hours of battery life from the transmitters per charge and up to 7 times charge with the charging case. [ONLY COMPATIBLE WITH Android or I phone devices with an type c port ]