2.4 GHz Wireless Handheld Monitor 1.8" TFT LCD w/Speaker Sound-Activated Sensor Wireless Color CMOS Sensor Rechargeable Batteries w/built-in charger Specifications CMOS Camera & Transmitter Pick Up Elements: Color CMOS Sensor - 300,000 Pixels Transmit Frequency: 2.400 GHz ~ 2.483 GHz Frequency Deviation: +/- 100 KHz (10 ~ 50 degrees C) Demodulation Method: FM RF Output Power: Vcc= 5V, output impedance= 75 ohm, 10dBm Antenna: DIPOLE (3.35") Min. Illumination: 3 LUX (at F2.8) Built-in: Microphone Transmission Range: 30 Meters (About 130 Feet) Environmental Operation Temperature: 10 ~ 50 degrees C Operation Humidity: 5% ~ 85% Power Source: 6V DC 1A 1.8" TFT LCD Wireless Monitor & Receiver- Screen Size: 1.8" TFT LCD monitor Receiver Frequency: 2.400 GHz ~ 2.483 GHz Power Source: 6V DC 1A or 4 x AA Ni-MH rechargeable batteries Power Consumption: 2.3W Dimensions: 2.83"W x 4.25"H x 1.22"D