2 Din car dvd,double din car dvd,with touch,usb,sd,tv,bluetooth,gps,

double din car dvd:
6.2 inch TFT or 6.5 inch TFT or 7 inch TFT
with touch screen interface
support DVD/DVD-+R/DVD-+RW/CD/CD-RW/VCD
Support MP4/AVI/DIVX/MP3/WMA Files,and JPEG
Last position memory on DVD player
Support CCD Camera
Fix panel or Motorized panel
TV tuner buit-in ,NTSC/PAL/SCAME
AM/FM Radio
SD/MMC Card slot
Gps and bluetooth(optional)
Support external hard disc player
Rear-view parking camera input
1-way radio/video input
2-way audio /video output

双定DVD带触摸，USB，SD，电视，蓝牙，GPS功能

Duration : 0:1:47

can any one tell me that nokia n95 gps work without gprs service and what is a roll of bluetooth in gps. ?

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