Acer e310 GPS, 2.8", 240 x 320 pixels, TFT, 0.064 GB, 0.064 GB, 0.3 GHz Acer e310 GPS. Display diagonal: 2.8", Display resolution: 240 x 320 pixels. Internal memory: 0.064 GB, Flash memory: 0.064 GB. Processor frequency: 0.3 GHz https://www.gadgetspeak.com/gadget/article.rhtm/756/428307/Acer_E310_Travel_Companion.html I would call it a personal navigation unit as not only can it be fitted in a car but it has a pedestrian mode that lasts a reasonable time between charges.