hope some one may help.i rely want to get a marshall GPS system,ive been on the f/b marshall gps page ..can anyone tell me what i can expect from the turbo transmitter with fully charged battery some people say two hours some say five even in economy mode dos anyone no i realise it will use more power in HD but would rely like to no what can be expected in the different modes perhaps marshall might help?? and i no it can be put in sleep mode ..but what are times with out sleep mode
thanks in advance for your help regards David