Specifiction:

4.3" Slim hd car rearview mirror with dual camera
Blue Glass (Fashion and Anti-glare)
120 Degree Wide Angle
Support GPS (External)
3.0 Mega Pixel 1080P Front Camera + 720P Back Camera
Advanced H.264 Compression (Save Space of Storage)
Built-in G-sensor.
Seamless Continuously Loop Recording (Not Miss Any Data).
Auto Start: Start to Record Video Once Vehicle Starts.
Support Replay While Recording in Driving
Output: By AV Port, HDMI, USB
More Application: To be Camcorder, PC camera, and Storage.
Including Bracket for Easy Installing
Support Multi Language
Powered by USB Cable or Car Charger
Built-in Rechargeable Lithium Polymer Battery

Tips for using Car DVR
1.How to use parking monitorning function ?

A.Connect DVR with Power bank . When you parking at night,Connect DVR with large capacity power bank and turn on motion detection function,and then your car will be protect 24 hours by DVR .

B.low-voltage protection cable,Connect DVR through the ACC or reading light power supply, and turn on motion detection function ,and then your car will be protect 24 hours by DVR and keep car has enough battery to start enginer

2. How to choose memory card for DVR ?
Now main resolution for car DVR at the market is 1080P .so the request for memory becoming very strict,
Now the main resolution for car DVR on the market is 1080p, so the requirements for memory cards are very strict.According to the class of memory card,Mini class memory should over class 6. We have class 10 memory card with high speed.  
3. How to choose the memory card capacity?