Description:  【1 Piece Touch to Talk】: This portable audio receiver is equipped with ’s 3.5mm audio jack, which makes it available as standard too. Voice radio touch call. 【Frequency Range】: The frequency range of the radio receiver by this software is 1MHz-6GHz. There is a micro card slot for data and code storage, which is very practical and convenient. 【Precise Tuning】: This USB radio receiver adopts PPM calibration, which can achieve more precise tuning and stable performance, very easy to use, you can use it with confidence. 【Easy to Use】: Easy to connect and install. Press the black knob once to turn it on, and press the black knob twice to turn it off. 【Saves Energy】: Sleep mode only saves energy by turning off the display. Stable performance,compact and portable. Specification: Material: aluminum alloy Battery capacity: 2000mAh Interface: audio output, microphone input, Micro USB interface Size Chart: Package Size: 16cmx10cmx6cm/6.30inchx3.94inchx2.36inch Package Includes: 1 Portable Radio Receiver ; 1 Telescopic Antenna ; 1 Piece Data Cable ; 1 Machine Foot Pad ; 1 Piece Touch Pen Note: Please allow slightly errors due to manual measurement and different monitors.