2.4G wireless video and audio transmission 2.5-inch LCD color screen with 960 x 234 resolution Portable wireless audio and video recorder Supports SD card, 8GB (maximum) Built in rechargeable Li-battery lasting for 2 to 4 hours Audio monitoring with microphone in camera Two cameras manually select on receiver 100m transmission distance without block 420 TV lines Receiver: Receiving sensitivity: ≤-85dBm Video output: 1Vp-p @ 75Ω Audio output: 2Vp-p @ 600Ω Power adapter: 5V DC/2000mA Dimension: 123 x 76 x 26mm Weight: 132g LCD: 960 x 234 high resolution TFT LCD Movie: MPEG4, AVI and ASF MPM plays: MPEG, AVI, ASF, MP3 and WAV Video recording resolution: 640 x 480, 320 x 240 and 160 x 128 Speaker: 8Ω/0.5W Storage: built-in 128M flash SD card: 8GB (maximum) Language: simplified Chinese/English PC Windows: XP Interface: USB 2.0 and USB 1.1 File system: FAT32 Camera: TV system: PAL/NTSC Validity pixel (H x V): 628 x 586 and 510 x 496 Image device: 1/3-inch OmnVision CMOS Horizontal definition: 420TV line Angular field of view: 45° (F = 6mm) Minimum illumination: 1.0 Lux (F1.2) Scanning frequency (H): 15.625kHz and 15.734kHz Scanning frequency (V): 50Hz and 60Hz Power adapter: 5V DC/500mA Dimension: 73 x 60 x 101mm Weight: 105g