for more information, please refer to our webiste http://www.bonup.cn contact with us by lisa@bonup.cn or info@bonup.cn 1) 4 inches lcd touch screen, high definition, max resolution 480 x 272 2) support wma, mp3, wav file to listen music; wma asf, avi file to watch mp4 video; txt file to read e-book & jpg, gif, bmp, png file to view photos 3) clear spoken instructions 4) different country e-map optional, e-map can be updated by removable sd/mmc card 5) osd menu in many different languages.... 6) microsoft win ce 4.2 and office software with copyright pre-installed in your select language 7) gps receiver module with antenna built-in and external antenna connector 8) cpu samsung arm920t s3c2440a /400mhz, memory 64mb nand flash, 64mb sdram, gps sirf star iii 9) home charger & car charger, rechargeable lithium battery 3.7v 900mah, it can work 3-4 hours for navigating 10) battery can be easily replaced by nokia mobile phone battery which you can buy it easily anywhere. this function should be very welcomed by end-user. ���������� 11) slim design, thickness is 23.3mm, easy to be put in a pocket �������� 12) we use good raw material to enable gps navigation receive very good satellite signal. �������� 13) usb cable, windshield-mount 14) approvals: rohs, ce, fcc,fda 15) gps navigation deimension: 128 x 77 x 23.3mm color box dimensions(l x w x h): 250 x 180 x 95 mm 10 pcs/ctn, outer carton dimensions(l x w x h): 480 x 380 x 270 mm 16) n.w.: 10 kgs; g.w.: 11 kgs 17) qty/20'' fcl: 5700pcs ; qty/40'' hq: 13200pcs