Features 1.2.4G SIGNAL TRANSMISSION: Real time automatic synchronization technology with ultra low latency 2.4G signal transmission. Let you complete dynamic shooting, cell phone recording and short video production in a variety of large scenes. 2.80MAH RECHARGEABLE BATTERY: Wireless clip on microphone has a built in 80mAh rechargeable battery that can work continuously without power for about 7 hours. Receiver is powered by your device (can be charged at the same time). 3.CLEAR AND STABLE: Wireless lavalier lapel microphone covers 70ft of signal, helping you get rid of cluttered wires and record or shoot video clearly indoors or outdoors at greater distances. 4.NOISE CANCELLATION: Lavalier mic features vocal curve correction to accurately pick up sound no matter which direction it's coming from. Professional noise reduction technology to isolate noise interference while recording. 5.EASY TO USE: Simply plug the receiver into your device and turn on the portable microphone for automatic pairing. When the microphone's blue light stays on, it means the microphone is working properly. 6.APPLICABLE RANGE: Wireless lavalier microphone works with for iPhone 7 and higher, for IOS smartphones. Suitable for interviews, webinars, podcasts, microblogs, live streaming. Free up your hands and record from a distance. specificationItem Type: Wireless Lavalier Microphone Material: ABS Microphone Battery Type: 2 x Built In 80mAh Lithium Ion Batteries (Included) Charging Compartment Battery Type: Built In 400mAh Lithium Ion Battery (Included) Frequency Range: 2.4GHz Frequency Range: 20-20KHz Transmission Delay: 9ms Signal To Noise Ratio: 64dB Operating Time: About 7H Charging Time: About 50min Microphone: Digital Microphone PackageList2 x WirelessLavalierMicrophone 1 x Receiver 1 x Charging Storage Box 1 x Charging Cable 1 x Instruction Manual Note1. Please tear off the insulating paper at the bottom of the microphone when charging 2. If the microphone is not recognized, please upgrade your phone for IOS version