Extra Long Battery Life Battery life is up to 6 hours with one hour full charging time. Perfect for on the go recording. Compact to Carry around Little Finger Size the compact body won t take up so much room or adding to much weight to you when carrying around. Mini Metal Clip allows you to easily clip it to your collar or pocket. Fullband 48KHz Stereo Sound Featuring 44.1/48KHz stereo sound pickup and transmission in real-time. Real Time Monitoring This wireless microphone built-in real time monitoring function you can test whether it is working normally during recording and monitor the audio status to complete the recording at one time gives you more professional and convenient recording. Multi-Channel Real-Time Mixing Your smartphone and microphone audio source Smartmic audio source external earphone microphone BGM.4 audio sources can be selected in Smartmic App. It can synchronize the background music for phone and human voice in real time. It s a great innovation technology for video creators. Best for content creators filmmakers videographers and journalists to make great content easily