Doesn't come in original box CoMica CVM-WM100 PLUS UHF 48-Channel Wireless Dual Lavalier Microphone System DG CoMica CVM-WM100 PLUS UHF 48-Channel Wireless Dual Lavalier Microphone System DT This microphone receiver kit is made of high quality material. It comes with fine workmanship and professional design. Suitable for using in news interview, film and television shooting, character interview, program host, teaching and training, etc. Features: Support two transmitters and one receiver work simultaneously, convenient operation for many people. 48 channels options, convenient for multiple devices working together without interference from other channel signals. Two power supply modes, powered by AA batteries or external charging, working time up to 6 hours, USB interface at the bottom, it's pretty convenient for charging. Real time monitoring can monitor the recording effect in real time and make it easy to adjust. Working distance is up to 100m(100m in open area, 60m in barrier area). Lattice LCD with high resolution, low power display will hardly affect the whole standby time, the icon and font on the screen are concise and clear, can real-time understanding equipment operation status. Specification: Brand: COMICA Material: Plastic+Metal Color: Black Working temperature: 0 ? ~ + 50 ? Storage temperature: - 20 ? ~ + 60 ? Weight: Approx. 962g Collar clip transmitter TX: Radio frequency: 568 ~ 592 MHZ Channel number: 48 Endurance time: 6H Antenna: 1/4 Wavelength Wire Antenna Transmission power: 10 DBM / 15 DBM Stray radiation: 60 DBC Sound Delay: 20ms Audio Distortion : 0.5% Signal to noise ratio: 65 db Frequency response: 20 hz ~ 18 KHZ Audio input interface: 3.5 mm interface Battery: 2 * AA batteries External power supply: Micro USB 5V / 1A Size: Approx. 107 x 66 x 26mm / 4.2 x 2.6 x 1.0in Receiver RX: Radio frequency: 568 ~ 592 MHZ Channel number: 48 Endurance time: 6H Antenna: 1/4 Wavelength Wire Antenna Receiving sensitivity: - 95 DBM Sound Delay: 20ms Audio Distortion : 0.5% Signal to noise ratio: 65 db Frequency response: 20 hz ~ 18 KHZ Audio input interface: 3.5 mm interface Battery: 2 * AA batteries External power supply: Micro USB 5V / 1A Size: Approx. 107 x 66 x 26mm / 4.2 x 2.6 x 1.0in Package List: 2 * Collar Clip Transmitter TX 1 * Receiver RX 1 * 3.5mm MIC audio input line 1 * 3.5mm-3.5mm audio output line 1 * 3.5mm-XLR Canon audio output line 3 * Belt clip 1 * Fixed base of camera 2 * Windproof Wire 1 * USB power cable 1 * Storage Bag 1 * User Manual