... CH audio,3G,GPRS,are optional 4ch 3G,GPS mini Car DVR with 3.5inch TFT screen ... trace of his (her) vehicle. And this powerful GPS tracking can be easily realized by cell phone, or ... This model has integrated real-time tracking capabilities, using GPS.18. The real-time longitude, latitude and car ... With GPRS data transmission function, the real-time position of the vehicles can be tracked by mobile phone ...