Wireless receiver - 2.5" TFT LCD Monitor Built -in Lithium Battery Working 2-3 Hours. Mini baby monitor Receiver Specifications-Power Supply:AC-DC ... LCD MONITORReceover Frequency : ISM 2,400 - 2,483 MHzCH1 = 2,414G ; CH2 = 2,432G ; CH3 = 2,450G ; CH4 = 2,468GProduct Size ( L x W ... Working 2-3 Hours .Power Supply : AC-DC ( DC + 6V 800 mA ) Earphone 1PCS 2.4GHz wireless receiver (2.5" TFT LCD Monitor) ...