High Quality New Model Double Faces LED Backpack Walking Billboard with Battery for Outdoor Advertising

High Quality New model double faces LED backpack walking billboard with battery for outdoor advertising:
 
Outline dimension: 150cm*63cm*5cm
Front side poster size: 138cm*57cm
Back side poster size: 59*57cm
Weight: < 7 Kg
Discharge time: > 5 hours
Battery capacity: 6000mAh lithium battery
Light source: high power LED lamp
Product Description
The Walking Boards are new media for outdoor advertising! It's Sample, Convenient, Mobile, Economic.
 
The Walking Boards are brought up to date by introducing a new design concept and internal LED illuminated backlighting.
 
The Walking Boards can move to anywhere as your men want to go!!!
Walking mobile billboard, internal LED illuminated backlighting - up to 5 hours of Battery Life 
Product features:
1 large size advertising screen, "where you go, you are the focus".
2 double sided four sides open aluminum frame, convenient and quick change poster!
3 ultra lightweight design, with super wide straps, back up more comfortable.
4 waterproof plug, more durable.
5 border arc design, public places more secure.
6 high power LED lamp, the brightness is higher, more uniform.
7 built in 6000mAh large capacity lithium battery, more than 300 charge and discharge, full of light can be more than 8 hours.
8 implicit support design, 
* Application interior decoration, chain operation store, company signboard, commercial centre, supermarket, airport, station, subway, bank, bus station, large exhibition project etc.