2.5-inch TFT LCD screen Resolution: 640 x 240 pixels Built-in rechargeable Lithium battery in both camera and receiver Camera battery: at least 5 hours of working Receiver battery: at least 2 hours of working Records 1 hour video or thousands of pictures by 1GB SD card 4 optional channels to avoid possible interference Up to 100m (330 feet) transmission range in open space Specifications: General: Transmission frequency: ISM 2,400 to 2,483MHz Transmission power: 10mW/CE and 2mW/FCC Operating frequency: 2,414, 2,432, 2,450 and 2,468MHz 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 Li-battery charge time: 2 hours Li-battery working time: 5 hours Bandwidth: 18MHz Current consumption: 90mA (maximum) Power supply: +5V DC Dimensions: 23 x 66 x 23mm Weight: 32g Receiver: Receiving sensitivity: ≤-85dBm Intermediate frequency: 480MHz Video system: NTSC/PAL Video recording: 2 hours/1GB Photo saving: 4 thousand pictures/1GB Supports MPEG4, MP3, WMA, WAV, JPG and TXT formats Color configuration: R.G.B.delta Current consumption: 350mA (maximum) Power supply: +5V DC Dimensions: (W) 71 x (D) 24 x (H) 137mm Weight: 125g