1. There are 8 kinds of “Memory Size”. Some of them have included Micro SD Card already. To avoid possible incompatibility problems, we would suggest you buy Micro SD Cards from us as well. 2. FM Radio can be only listened via wired earphones, not via Bluetooth. 3. All cargo will be packed in bubble boxes instead of retail boxes to enhance cargo protection. Please contact us or leave us a remark if you need a retail box.