Features: 5.8GHz transmission away from 2.4GHz interference 2.5-inch TFT LCD screen, resolution: 640 x 240 pixels Tiny size for discreet observation and portable Built-in microphone for audio monitoring Up to 100m (330-feet) transmission range in open space Specifications: General: Transmission frequency: ISM 5,725 to 5,875MHz Transmission power: 10mW/CE and 2mW/FCC Operating frequency: 5,737.5, 5,762.5, 5,787.5 and 5,812.5MHz Unobstructed effective range: 100m (minimum) Modulation mode: FM Operating temperature: -10 to +50 degrees Celsius (+14 to +122 degrees Fahrenheit) Operating humidity: ≤85%RH Camera: Imaging sensor type: CMOS Picture total pixels: PAL: 628 x 582 NTSC: 510 x 492 Minimum illumination: 5 Lux Bandwidth: 25MHz Current consumption: 100mA (maximum) Power supply: +8V DC Dimensions: (W) 24 x (D) 25 x (H) 24mm Weight: 14g Receiver: Receiving sensitivity: ≤-85dBm Video system: NTSC/PAL Li-battery charge time: 2 to 3 hours Li-battery working time: 2 hours Color configuration: RGB delta Current consumption: 350mA (maximum) Power supply: +5V DC Dimensions: (W 80 x (D) 38 x (H) 130mm Weight: 160g