... (RMS)2. Microphone:40MM 4Ω 3W3. Input Power:DC 5V500MA4. Max Current Consumption:450mA5. Frequency :100Hz-18KHz6. Sensitivity:80db±2db7. Colors:black ... . With radio function10. With LCD Screen Accessories Available: housing,hansfree,charger,bettery,silicon protecter,screen protecter,usb data cable, memory card ...