PULUZ Vlog Video Wireless Lavalier Microphone with Transmitter and Receiver for DSLR Cameras and Video Cameras(Black) Features 1. UHF Wireless Transmission Tech: Wireless technology with more stability and stronger anti-interference, can deliver long transmission distance. 32 switchable channels available, you could quick to choose the stronger signal channel, recording higher fidelity sound. 2. 70dB SNR for Clearer Audio: Built-in audio processing chip, featuring with 70dB of SNR, captures audio with more details meanwhile the signal noise very low during transmission, reproducing more original and clearer sound than other ordinary mics. 3. Screen Display: Both transmitter and receiver are equipped with screens, showing channels and status lights for checking working condition in real time. 4. Multi-Device Compatibility: Included with a universal 3.5mm port and cold shoe adapter, you can mount the receiver to smartphone, digital SLR cameras, camcorders, recorders and PC, meeting shooting and recording needs on various occasions e.g. interview, vlogging recording, YouTube live streaming, presentation and more. 5. Operating distance: No less than 20 meters in complex environments with interference or no shelter, no interference and 50 meters in open areas Specification 1. Working current: 160 + -10mAh 2. RF frequency: 570-598MHZ 3. Number of channels: 32 channels for each AB 4. Audio frequency response: 50-15000HZ 5. Noise floor: Less than -70dB 6. Total harmonic distortion: Less than 0.1% 7. SN: Greater than 72dB 8. Battery: Built-in 800mAh battery 9. Use time is about 5 hours 10. Production size: 61x17x47(mm) Package List 1. Transmitter x 1 2. Receiver x 1 3. Lavalier Microphone x 1 4. USB Cable x 1 5. Fur Wind Shield x 1 6. Sponge Wind Shield x 1 7. 3.5mm Jack Cable x 2