Boya BY-MM1 Universal Cardioid Microphone,

• Microphone Type: Electret Condenser with a Cardioid polar pattern, which optimizes sound pickup directly in front of the lens while minimizing surrounding ambient noise.
• Power Requirement: Plug and Play operation. It draws power directly from your host device, completely eliminating the need for a battery.
• Frequency Range: Offers an audio response spanning 35Hz to 18kHz.
Out-of-the-Box Compatibility
The package explicitly states universal compatibility. It ships with two distinct 3.5mm audio cables:

1. TRS to TRS Cable: For seamless connections to DSLR cameras, mirrorless units, camcorders, and field audio recorders.
2. TRS to TRRS Cable: For plugging directly into smartphones, tablets, and modern computers/laptops.
   (Note: Newer smartphones lacking a dedicated 3.5mm headphone jack require an appropriate USB-C or Lightning dongle adapter to connect).
   Standard Box Contents
   Along with the microphone cylinder itself, standard retail packages include:
   • A heavy-duty red shock mount designed to slide securely into a standard camera hot-shoe mount while mitigating physical handling vibration noise.
   • A dense furry windshield ("deadcat") engineered specifically to suppress heavy wind rumble during outdoor shoots.
   • A dedicated travel/storage pouch alongside the documentation.