Dual lens HD Portable car DVR with GPS and G-Sensor GPS tracker,record the speed /track/ direction G-Sensor, storage the evidence   Viewing angle: 140 degrees of front lens,can be rotated up and down 20 degrees,120 degrees of back lens LCD screen size:2.7 “(16:9) Video format:AVI TF memory card slot:Micro TF Microphone / loudspeaker:Built-in TV system:NTSC/PAL DC access:5V 500MA Battery:Built-in lithium polymer battery 500MA can capture ultra clear picture in a dark place. Charging time :about 240mins. Battery :Built-in lithium battery Built-in 1/4 inch low-noise and high-quality photographic element With a delayed start function to prevent transient pulse current damage machine at the moment the vehicle start. Support language : English/ Simplified Chinese/ Traditional Chinese Japanese/ Korean /Russian /German PC operation system :above windows 2000/ XP /Vista/windows7.0,MAC OS x10.3.6 Accessories: Cigar lighter/ special holder / GPS module / user manual