Features: Mini stereo FM receiver module adopts advanced DSP and PLL technology to ensure quality sound and stable performance. Backlight LCD display offers accurate and clear view with little power consumption and noise. With potentiometer to regulate the volume and frequency, easy to operate. On-board 2X3W stereo audio amplifier chip enables you to DIY FM radio easily, no extra audio amplifier circuit needed. Can be powered over a USB cable with a USB charger and has a 3.5 mm jack for a pair of earphones. Auto switch between speaker and earphones output. Specifications: Material: ABS Output power: 500mW(drive headphones),3Wx2(drive speakers) Current: 1A max. Voltage range:3.0-5.0V Frequency response range: 50Hz-18KHz Receiving frequency range: turn off campus broadcast 87.0MHz-108.0MHz turn on campus broadcast 76.0MHz-108.0MHz Equivalent noise: 30dB Channel: Stereo Item Size: 75 * 45 * 30mm / 2.95 * 1.77 * 1.18in Item Weight: 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