1.Dual camera car dvr with GPS,G-sensor 2.2 cameras(120,170) 3. ... card 5.audio Dual camera car dvr with GPS,G-sensor 1.Suitable for taxi, trucks or buses.2.Auto record when power up ... system, synchronize ability outside and inside the car.3.Synchronize of Image, ... ) After formatting, the remaining capacity will show 80MB. Dual camera car dvr with GPS G-sensor