1.Compatible with iPod, iPhone, iPad 2.FM radio 3. With usb and sd Slot 4.Popular shape and ... ,DC Cable Charge power.Aduio input,output.Configure LED and digital display.Technical parameters:Output power: 3WBuilt-in loud speaking: 40mm ... ±2dbSNR:≥80DbDegree of distortion: ≤0.3% 2012 stylish portable car digital speaker with tf/usb,fm