Description: Auto Pairing: No need App or needed, item includes microphone and receiver, just clip the microphone to your collar and plug and play the receiver on your devices, will automatically Low Latency: Very low latency, 20m-30m barrier free reception, can use broadcast and take a small video. Performance: 64DBM adaptive noise reduction, Due to the built in smart noise reduction system, the tiny lapel microphone can rerduce most of the surrounding noise. 360 full pointing pick up,record every detail of the sound. Small and convenient,it compatible with various devices with interface, support mobile phone, tablet, camera, notebook ,etc. Specification: Model: LT-08 Input Voltage: 5V Battery Capacity: 60mAh Battery Life: 5-6h Signal To Noise Ratio: 64DBM Adaptive Noise Reduction Transmission Delay: 30ms Sensitivity: -42db Frequency Response Range: 20-20khz Transmission Distance: Barrier Free 20m-30m Material: PP Size Chart: 12x8x3cm/4.72x1.18.15x3inch Package Includes: 1 Piece Rechargeable 1 Piece Receiver 1 Piece English Manual 1 Piece USB Cable Note: 1. Please allow slightly error due to manual measurement. 2. Due to the difference between different monitors, the picture may not reflect the actual color of the item. 3. Wish you a wonderful online shopping!