The third microphone is in the charging cable box below.One of the three microphones is backup, you can't connect three at the same time.Two microphones can be connected at the same time.No need to worry about losing one | NEW 2024 Model mini microphone: wireless microphone for iphone utilizes state-of-the-art Series V 2.4GHz digital transmission and proprietary near-zero latency codec with 128-bit encryption, it delivers crystal-clear, incredibly stable audio with a range of up to 65 feet. Equipped with 2 plush windproof covers and, the Wireless audio you can rely on in almost any recording application. | Smart Noise Cancellation: Our dual microphone wireless is equipped with professional-grade intelligent noise reduction chips and high density spray-proof sponge that helps to cuts off any noise interference and improve audio quality,record every detail of the sound clearly regardless of the surroundings. The omni-directional mini microphone iphone microphone gives best clear timbre.lavalier microphone for iphone | Full Compatibility and 3 Mic: The upgraded wireless microphone comes with a 3 in 1 universal receiver and 3 Wireless Lavalier Microphones, eliminating the need to replace multiple individual interfaces or interface cables. Compatible with android smartphones, iphone(including iPhone 15)lavalier microphone for iphone, iPad, laptops, personal computers, camera etc. Mini microphone is suitable for blogging, interviewing, live streaming, blogging, podcasting, youtube, instagram, TikTok. | Rechargeable Transmitter and Receiver :wireless lavalier microphone built-in large capacity rechargeable battery and low power chip, provide more than 7 hours of battery life. Furthermore, this microphone for iPhone also supports charging while recording. With type-C charging cable, the receiver and the phone can be charged at the same time. | Easy Automatic Connection：Wireless microphone is easier to set up. Plug and play, no adapter, Bluetooth or app required, simply plug the receiver(Lightning/TYPE-C/3.5mm port) into your device . and turn on the portable microphone and the two parts will pair automatically. (Note: Bluetooth wireless microphone , if the match is not successful, don't worry, just shut down the device and try again)