Hi,\nI am using for 10 years now my GO720 and I am very happy with it. Only had to replace the battery. Still works flawless with indicating lanes technology ...\nI have three questions ...\n1) I found a GO730 in a disposal bin. It looks in very good condition. When I switch it on it starts up but shows an icon of a memory card indicating that there is no memory card in the slot. My GO720 never had a memory card and the slot is covered with a tape from factory off. I purchased a SanDisk SDHC 32GB speed 10 memory card and installed it in the 730. When I start it up it indicates now something like a disc driver icon and still does not start further up.\n2) I bought an original TT remote which works on bluetooth. Does the GO720 and GO730 both have bluetooth.\n3) What is the diff between 730 and 720?\nAny help would be greatly appreciated.