First and foremost let's talk about the M04 Mini Omni-Directional 3.5mm Jack Microphone Portable Small Mic for Sound Card Recorder Cellphone Smartphone Android Phone.
This super mini microphone is designed to be used with various smart devices, such as iPads and smartphones like the iPhone 5 and 6s. It features high sensitivity and all-directional pick-up, making it a suitable choice for audio and video recording.

In terms of performance the M04 microphone offers a frequency response range of 50Hz-20KHz, an impedance of 2.2K Ω, and a sensitivity of -34dB±3dB (0dB=1V/uPa). Additionally, the included windshields effectively reduce ambient noise. Its plug-and-play design makes it very convenient to use and is compatible with any device that features a 3.5mm standard connector jack. Overall the M04 microphone is a versatile and reliable option for those in need of a portable recording solution.

To sum it up the M04 Mini Omni-Directional Microphone offers several benefits, such as its compact and portable design, all-directional pick-up, and compatibility with a wide range of smart devices. However there are some known drawbacks, such as its relatively high impedance, which may limit its use in certain situations.

In my opinion the M04 Mini Omni-Directional Microphone is an excellent choice for anyone looking to record audio or video on-the-go. Its high sensitivity and all-directional pick-up make it a versatile and reliable option for a wide range of recording scenarios. Although there are some minor drawbacks to consider, the overall quality and convenience of the M04 microphone make it a worthy investment for anyone in need of a portable recording solution.