USB‑101T 10 Channels Wireless Lavalier Lapel Microphone System with Bodypack Transmitter Item Type: Lavalier Microphone System Receiver: Material: Plastic Color: Black Output Interface: USB+3.5mm Frequency Range: 480-940MHz (Max frequency range) Radio Frequency Transmit Bandwidth: 60HMZ Channel Number: 10 (Each 2.5L is a unit for one channel, and the maximum channel is 100 for setting) SNR: 96dB Receiving Sensitivity: -108dBm@12dB Sinad Frequency Response: 30Hz-18KHz Dynamic Range: 90dB Total Harmonic Distortion:0.05% Receiving Delay: 2.5ms Transmitter: Power: 2 x AA Battery(Not included) Microphone: Material: ABS Color: Black Transmitter Type: Capacitance Adapterization Mode: Cardioid Pickup Pattern Frequency Range: 480-940MHz Radio Frequency Transmit Bandwidth: 60HMZ Channel Number: 10 Transmition Power: 10 Megawatt Frequency Response: 30Hz-18KHz Dynamic Range: 90dB Harmonic Radiation: ＜-50dBc Weight: Approx. 259g/9.1oz