1、WIRELESS TRANSMISSION TECHNOLOGY: Wireless lapel microphone adopts wireless transmission technology, stable connection, anti interference, clear radio, 30m long transmission distance. Built in 300 mAh battery can last 7 hours continuously. 2、HIGH SENSITIVITY CAPACITIVE MIC: Wireless lavalier microphone system built in high sensitivity capacitive microphone, 360 degree no dead angle pickup. Built in high sensitivity, DSP noise reduction chip, record every detail. 3、BLUETOOTH 5.1: Wireless clip mic uses Bluetooth 5.1 to support wireless Bluetooth accompaniment for cell phone singing. Compatible with 99% of devices for cameras, cell phones, video cameras, computers, sound cards, mixers and other devices. 4、WITH LED DISPLAY: Wireless lavalier microphone with LED display, signal status mode status, noise reduction, power status, charging status and other timely visible. Small and lightweight, mini portable. 5、TWO WAY MONITORING: Wireless clip on microphone comes with a headphone interface, two way monitoring, while recording and adjusting, real time monitoring ear return. Vlog and live mode switch at will. Live mode with reverb sound. Item Type: Wireless Lavalier Microphone Material: ABS Transmitter: Bluetooth Protocol: BT5.1 Applicable Distance: Approx. 15-30m / 49.2-98.4ft Frequency Response: 20Hz-20KHz Sampling Rate: 48KHZ Operating Current: 33mA Power Off: ≤2.4uA Endurance: ≥7H-9H MIC: -36dB Signal To Noise Ratio: ≥85dB Analog Sound: 3.5MM Transmission Digital Sound: TYPE C Transmission Operating Temperature: -10℃-50℃ Battery Type: Lithium Battery Single Transmitter Battery Capacity: 300mAh (Included) Receiver: Applicable Distance: Approx. 15-30m / 49.2-98.4ft Sound Delay: ≤30ms Sampling Rate: 48KHZ Operating Current: 15mA Standby Power Consumption: ≤1.2uA Endurance: ≥7H-9H MIC: -36dB Signal To Noise Ratio: 85dB Analog Sound:3.5MM Transmission Digital Sound: TYPE C Transmission Operating Temperature: -10℃-50℃ Battery Type: Lithium Battery Battery Capacity: 300mAh (Included) 2 x Transmitter 1 x Receiver 1 x USB Charging Cable 1 x Type C Cable 2 x Microphone Windscreen 1 x 3.5mm Sound Cable 1 x Earphone 2 x Microphone Windscreen Ring