30 Hours Battery Life: The single mini microphone can recording for about 5 hours. The charging case recharges the complete unit 1.5 times. With the charging case, the total recording time extends to 30 hours. Record all day long without worrying about running out of power while recording. Innovative AI Voice Changing: The mini vlogging microphone supports 3 types of AI voice changing. Double-click on the receiver's function key to convert, one blue flash is male voice, two flashesis female voice, three flashes is the original voice. You can enjoy a variety of tones, making recording more fun. Plug and Play, 164 Ft Transmission: The wireless mic for iphone is paired at the factory and requires no complicated setup. After powering on, the TX and RX are automatically paired. Mini wireless microphone supports 164 ft of stable transmission. Audio and video are synchronised with clarity and no distortion. Perfect for outdoor recording work. Upgraded Level 3 AI Noise C