Features: The mini stereo FM receiver module adopts advanced DSP and PLL technology to ensure quality sound and stable performance. Backlit LCD display provides a clear view and clear with low power consumption and noise. With potentiometer to adjust volume and frequency, easy to operate. Built-in 2X3W stereo audio amplifier chip allows you to easily DIY the FM radio, no additional audio amplifier circuitry required. Can be powered by USB cable with USB charger and has a 3.5mm jack for a pair of headphones. /> Automatic switching between speaker and earphone output. Features: Material: ABS Output power: 500 mW ( practice headphones), 3Wx2 (practice speakers) Current: 1A max. Voltage range: 3.0-5.0 V Frequency response range : 50 Hz-18KHz Receive Frequency Range: Disable Campus Broadcast 87.0MHz-108.0MHz Enable Campus Broadcast 76.0MHz-108.0 MHz Equivalent noise: ?30dB Channel: stereo Item size: 75 * 45 * 30mm / 2.95 * 1.77 * 1.18in Weight of Item: 30g / 1.05oz Package Weight: 35g / 1.23oz Package Size: 12.5 * 7.8 * 5cm / 4.92 * 3.07 * 1.96in Packing List: 1 * Digital Stereo FM Radio Module