?PORTABLE BATTERY?The wireless lavalier microphone is powered by a 60MAH rechargeable battery that lasts up to 4 hours. The lightweight battery makes your collar less heavy. ?WIRELESS FREEDOM? The wire microphone is completely free of wires and can receive a stable audio signal up to 65 feet. Simply take your clip-on microphone with you to record over long distances anytime, anywhere. ?Plug and Play & Auto Pairing? Plug the wireless microphone receiver into your iPhone, the portable microphone and receiver will be paired automatically. Easily get noise-free video audio (if the pairing is not successful, don't worry, just turn off the device and retry). ?CLEAR SOUND? The lavalier microphone utilizes 2.4G wireless transmission and intelligent noise reduction technology, making the sound clear and loud. It can effectively recognize the original voice in noisy environment and realize clear recording, which makes interviews, video blogs, live broadcasts can be carried out smoothly. ?Wireless Microphone for iPhone?Wireless Lavalier Microphone works without connecting to Bluetooth or apps. The wireless microphone easily clips onto your clothes without falling off, get crystal clear audio for your videos. Compatible with iPhone, iPad and other devices.