Specifications: The Transmitter (TX) details are as follows: Wireless Band: 2400 ~ 2483.5MHz Transmitting Power: +10dBm Receiving Sensitivity: -86dBm Antenna: PCB Antenna Polar Pattern: Omnidirectional Frequency Response: 80Hz ~ 20kHz Sound Delay: External Mic Input Interface: 3.5mm TRS Battery: Built-in Li-ion Battery 300mAh 3.7V Battery Life: 5 Hours Net Weight: 29g Dimension: 39 x 22 x 55mm Operating Temperature: 0 ~ 50 The UC Receiver (UC RX) details are as follows: Wireless Band: 2400 ~ 2483.5MHz Transmitting Power: +10dBm Receiving Sensitivity: -86dBm Antenna: PCB Antenna Audio Output Amplitude: +0dB ~ +12dB Sound Delay: Date Interface: USB-C Monitor Interface: 3.5mm TRS/TRRS Net Weight: 29g Dimension: 33 x13 x70mm Operating Temperature: 0 ~ 50 Features: The product has the following features: 2.4G Digital Wireless, Global Free Frequency Dual Transmitters Triggered by One Receiver Visual Power, Audio Dynamic Monitor and Other Display Functions Internal and External MIC Two Input Modes Mono/Stereo Switchable Output Modes Real-time Audio Monitor Broadcasting Quality Audio RF Technology, Auto Freq. Adjustment, Stable Transmission Low Latency Working Range Up to 50m Designed with Multi-functional Belt Clip and Compact Design Please be aware of the following: Due to 2.4G wireless characteristics, please use this product face to face and avoid turning your back to the receiver to prevent signal loss, which is a common occurrence. Do not cover the antenna to avoid poor signal. The STEREO function cannot be realized in one-trigger-one mode. When using the product on your mobile phone, disable WIFI and Bluetooth to avoid 2.4G wireless interference. Treat this product with care as it’s a high-precision instrument; avoid dropping, hitting, or shaking it excessively. Do not use near heat sources or sources of interference, such as radiators, ovens, refrigerators, air-conditioners, smartphones or WIFI access points. Use the included wind muff to minimize wind noise or sound bursts when outdoors or in close pick-up situations. Avoid using the equipment in rain or damp environments as it can lead to a short circuit. Always keep the product in a dry environment. Package Includes: 1 x Transmitter(TX) 1 x UC Receiver (UC RX) 1 x 3.5mm Mic Audio Input Cable 1 x Wind Muff 1 x USB A-USB C Charging Cable 1 x Reset Pin 1 x User Manual