1、With 48 frequency channels, 8‑level adjustable volume, powerful and stable signal, using UHF frequency band, no interference during operation, and wireless range up to 50m/164ft. 2、The high‑definition sound microphone can be fixed on clothes, convenient to move, the signal transmission is stable, and it will bring you excellent sound effects. 3、Equipped with 2pcs 3.5mm for TRS‑TRRS audio cables, fit for mobile phones and cameras, and can use with cameras/smart phones/laptops/PCs/camcorders/DV, etc. 4、The transmitter is equipped with a display, you can see the battery power frequency channel and other data, with a clip‑on design, you can hold it or clip it on belt or clothes. 5、The receiver is equipped with a cold shoe mount, which can be directly fixed on cameras, XLR camcorders, tripods and other shooting equipment. 6、Built‑in 750mAh Li‑ion battery with long standby time, can be charged by Type‑C charging cable, and can be charged with car charger, computer, mobile power, and charging head, easy to use. 7、When the working status indicator of one group microphones and the working status indicator of two groups of microphones show a steady blue light, the device can work normally. Item Type: Lavalier Microphone Set Material: ABS Weight: Approx. 347.0g/12.2oz Transmitter: Color: White Number of Channels: 48 Number of Channel Groups: 1 or 2 Frequency Range: 550.125MHZ-586.225MHZ Signal to Noise Ratio: ≥70dB Spurious Suppression: -60dB Transmitting Power: 30mW Sound Delay: 1ms Antenna: 1/4 Wavelength Maximum Frequency Deviation: ±50KHZ Distortion: ≤0.5% Reference Audio Input Level: -40db (microphone input, 0db attenuation) Battery Type: Built-in Li-ion Battery 750mA Length: Approx. 45mm/1.8in Width: Approx. 18mm/0.7in Height: Approx. 120mm/4.7in Working Temperature: 0°C-55°C Storage Temperature: -20°C-55°C Receiver: Color: White Number of Channels: 48 Number of Channel Groups: 1 or 2 Frequency Range: 550.125MHZ-586.225MHZ Audio Output Level: -10dB Headphone Output Level: 87mW (32Ω) Receiving Sensitivity: -95dB Signal to Noise Ratio: ≥70dB Frequency response: 40Hz-18KHz (+/-3dB) Sound delay: 1ms Antenna: 1/4 Wavelength Maximum Frequency Deviation: ±50KHZ Distortion: ≤0.5% Battery Type: Built-in Li-ion Battery 750mA Length: Approx. 45mm/1.8in Width: Approx. 18mm/0.7in Height: Approx. 120mm/4.7in Working Temperature: 0°C-50°C Storage Temperature: -20°C-55°C 1 x Transmitter 1 x Receiver 1 x Cold Shoe Base 1 x 3.5mm for TRS-TRRS Audio Cable 1 x 3.5mm for TRS-TRS Audio Cable 1 x TYPE-C Charging Cable 1 x Lavalier Microphone 1 x Manual 1 x Storage Bag