Features: ¡¾Cardioid Camera Microphone¡¿ Adopting cardioid polar pattern, the microphone can eliminate the background noise effectively and record the target sound clearly, providing you with better recording effect. ¡¾2 Low Cut Filter Modes¡¿ 75Hz/ 150Hz two low cut filter modes can effectively filter out the low frequency noise according to different occasions, making the sound quality more clear and more natural. And supports volume adjustment. ¡¾Built-in Rechargeable Battery¡¿ Built in 240mAh rechargeable battery, the microphone can work up to 30 hours after fully charged, which allows you to use the mic indoor or outdoor conveniently. ¡¾Real Time Monitoring & Low Noise Recording¡¿ Equipped with 3.5mm headphone interface for real time monitoring; and comes with 2 windscreens to reduce unwanted noise from outside environment. ¡¾Wide Compatibility¡¿ With 3.5mm TRS and 3.5mm TRRS audio cable, the microphone is widely compatible with most devices, such as smartphones, DSLR cameras,