Hello all I want to buy a bluetooth speaker for my gps I have a braille note MPower bt. I have . tried to buy different things e.g. sd cards for my bn. I have had a lot of trouble. I have actually had some people be quite rude. I want to know what questions I should ask and what I should look for when shopping for a bluetooth speaker so I can find something that meets my needs. If you can suggest where I could purchase such a device I would appreciate that, too. I would like to stay away from radio shack because they were so rude. I know I will need one of those toggle switches as well, correct? Thanks lots for your help. Rita