1. This is a great device for those looking for a discreet and economical recording device,it expands your memory,this tiny device will change your life. Your ability to capture great ideas as they come to you, capture conversations, meetings, discussions, verbal business agreements lectures and any other aural record you need. 2. It's compatible with Windows2000/XP/7/8/Android. 3. Keep it on your keychain and record your thoughts, to-do lists, or whatever comes to mind. 4. Press the button of money detector to turn on the lamp. 5. Note:The device has to be turn off at first,and then connect to PC to check the files in the Removable disk.