something on me makes me feel something is wrong and i can´t trust on those Chinese OEM cam´s.
Oem will be and aways be price minded , sacrificing quality for the price , if the Lens get expensive their will replace for cheaper model , if sensor get expensive will be replaced so quality is inconsistent.
Major part of Oem don´t have any support , i figure even some brands don´t give support figure if some OEM does.
Oem made of frankstain part´s most of them , public design , some cake recipe that be working for some brand (for example now in time people copy Dod/Tio recipe AR0330 + Novatek NT96650)
was worked for dod , whit some cut´s in quality can be used for even low cust models.
Oem come whit usual cheap parts , cheap mount and cheap 12V plug.
Oem warranty is aways made by the dealer , your warranty ended ? , you on ur own.
me , my self , i can´t live whit oem , got DV-007 once was a bad experience , enough for don´t go again.
i in hope some day some big japonese brand enter on dash cam market , will be Oem killer , figure Panasonic/Samsung/Sony/LG Dash Cams , would be fantastic.