PRODUCTION DETAILSBack window glass is the car window on the back side. Our back window glass is special then usual. Can change light from opaque to clear. Normally the transparency is 85%. Much higher then usual smart film. It is working by car plug charging. So as long as your electric and car plug is in good condition. It is safety. And also very clear to see the viewing.FEATURES :＊Power: Input DC12V turn to Output AC60V.＊Any size for your car can be customized.＊Sine wave transformer,Website: , stable.＊Easy installation.AUTO OQAQUE STRUCTURESTECHNOLOGY DATA OF SMART WINDOW GLASSSizeUP to car windowThickness3+Privacy Film +3MM or customerizedTransmittance>78.6% (ON)  <8%   (OFF)VoltageAC60V (50/60HZ)Window typeAny type with our smart film is okay.UV anti Over 98%FunctionAnti-glare, UV anti, Privacy & Security.WHAT KIND OF PEOPLE USING THIS?Any driver require privacy will loves our smart electrochromic glass. There is many situations. Such like some drivers need to drive a long trip. And they wanna take a nap in their car. So that the will need our electric glass window privacy. Block the sun light and have a private space. To have a comfortable sleeping. WORKING PROCESSMake car window glass according to the size your provided → Preparing the fittings → Preparing the smart film for glass → Pasting smart film → Testing smart film -- Inspecting for glass and accessories → Packing with wooden createMORE PRODUCTS SHOW  CERTIFICATE PACKAGEFAQ : Q: Will the smart film shut down when i driving?A: For safety sake. Our smart film is using by car plug. It is just like you charging a cellphone on your car. As long as you keep your car electric power system in a good condition. It will be working stable.Q: How should i check it and make sure it is work.A: Check the electric line & plug link tightly. Q: Will it take my electric energy empty?A: No, It wouldn’t. Its only 5 wattage for per sqm. So according to car window size. It is just like a simple bulb.Q: Do i need to change my car window glass for your product?A: No, if you are satisfied with your existing car window. You don’t need to change it. Just buy our smart pdlc film and install it on window surface.Why choose us1.Car plug inverter /transformer2.Wine wave transformer3.Remote control4.Factory supply, any reasonable require can meet 5.Video installation can offer6.We offer good after sale service, Like video chattingPAYMENTSWe are receive Western Union, T/T bank transfer and Paypal.30% as deposit and balance before shipmentSHIPPINGSmall order by DHL, FedEx, TNT, UPS or EMS, Hong Kong Post etc.If your quantity is large, ocean shipment and air freight are availableCOMPANY FILESNotice: To avoid any problem. Please using our Automatic Privacy Glass power transformer. And make sure your car electric system is in a good condition.