New 2.4GHz Wireless Baby Monitor CM386D-11 *2.5" TFT LCD Monitor with built-in*2.4GHz 4-Channel Receiver,Pechargeable size monitor for mobility*Frequency: ISM 2,400 - 2,483MHz*Power: DC 6V ,500mA or 4 AAA-size batteries*Imaging Sensor: 1/3 inch OMNIVISION Color CMOS*Operating Range: 30m/100m (Obstructed / Unobstructed)*Power: DC 8V ;built-in li-battery