Rechargeable battery,it has a strong magentic base so it can be absorbed anywhenre and not easily fall down. Driver just connect the backup camera with Wifi to the 5" LCD monitor and see the rear view from the screen,monitor supports 2 split screen or single screen camera views,HD 1080P 5" monitor with 720P camera, suction cup mount to vehicle windscreen or dash mount.

Products features:

    1. 5" wireless HD 1080P monitor, waterproof, built-in 2500mA battery
    2. HD 720P wireless camera, waterproof, Magnetic base, built-in 6400mA battery
    3. Recharge battery for monitor and cameras.
    4. Suitable for Pickup,Trailer, horse trailer, Tractor,Caravan,RVs,Engineering Vehicle etc

 Wireless Monitor Specs:

    Screen size: 5inch IPS
    Resolution:800*480*RGB
    AV input: 1ch HD wireless video signal input
    Operating frequency:2400-2483.5MHz
    Transmission distance: 150M in open area
    Built in battery, 2500mA, 8hrs continuous working with full charged
    Power supply: Type C connector, 5V
    
 Wireless magnetic camrea Specs:
   Image sensor: 1/2.7" CMOS
   Viewing Angle: 140 Degree
   Bulit-in HD wireless transmitter
   Transmission distance:150M in open area
   Built-in battery and magnet base
   Battery capacity: 6400mA, 18hrs continuous working 
   Waterproof level: IP68
   Power supply: DC 12-24V
   Battery Charging Time: DC5.5,12~24V/6H