Designed with mobile devices in mind, the BOYA BY-M1LV is an extremely lightweight, ultra-compact, easy-to-use wireless microphone that provides detailed, exceptional sound. There are two different receivers in this series . With MFi certified Lightning output, BY-M1LV-D receiver is designed for Apple iOS devices. The BY-M1LV-U receiver has a USB-C output, making it compatible with Android smartphones, tablets and other devices with USB-C ports. Thanks to the built-in omni-directional microphone The BY-M1LV-TX clip-on transmitter captures crystal clear sound from all directions. Utilizing breakthrough two-way audio technology with ear return monitoring, users can adjust the pronunciation at any time while recording, and adjust the tone, speed and intonation in real time. With gain control, volume control Headphone and mute function you have full control of your sound. A full charge can provide 6 hours of battery life, so you can create content without worrying about power. The BOYA BY-M1LV system is a great solution for livestreaming, content creation, mobile journaling and more. BY-M1LV-TX Transmission type 2.4 GHz GFSK modulation Up to 328 '(100m) operating range (unobstructed) RF output power 3.16mW Microphone Polar pattern Built-in microphone: omnidirectional Frequency response 50Hz-8.5KHz SNR & gt; 70dB Maximum SPL Built-in microphone: 1l0dB SPL Sensitivity Built-in microphone: -39dB 2dB (0dB = 1V / Pa @ lkHz) Power requirements Built-in lithium-ion or USB battery & lt; DC 5 V Antenna PIFA antenna Battery life Approx. 6 hours Audio output 3.5mm jack Weight Approx. 18g Dimensions 40x38.2x14mm Working temperature 0 C to 50 C Storage temperature -20 C to 55 C < p> BY-M1LV-D-RX 2.4 GHz transmission type GFSK modulation Operating range up to 328 '(100m) (without obstacles) RF output power 3.16 mW Audio output Lightning MFi certified connector Power requirements for iOS devices Antenna Antenna PIFA Noise reduction Yes Weight about 10g Dimensions 23x38.2x14mm Working temperature 0 C to 50 C Storage temperature -20 C to 55 C