4-Inch HD 1080P Dual-Lens Front And Rear Video Driving Recorder(Metal Shell)Parameter: 1. Focal length range: front 170 degrees and rear 120 degrees 2. Display: 4. 0 inch IPS screen 3. Lens: 170 degree viewing angle glass lens 4. Lens aperture: F2. 0 aperture 5. Front camera: 1920x1080P, 1280x720P 6. Rear camera: 720x480P 7. Loop recording (loop recording): Off 1 minute 2 minutes 3 minutes 5 minutes 8. Video format: MPEG 4 9. Audio: Built in MIC and speaker 10. Gravity sensor (gravity sensor): built in 11. PC interface: USB2.

LED indication: when source or interface is working

**Convenient Design:** Designed for on-the-go use

Aluminum Magnesium Alloy

Weight 822g

Including auto/manual power off and laser auto off function

TPU material

Core: tinned copper

Interface type: HDB15-F

**Balanced Weight:** The specially designed B2 battery pack helps balance the weight distribution

40HQ: 930 cartons * 50 pcs = 46500 pcs

Temperature -40 to 85 Degree Celsius

accelerated charging