The button must be pressed and held to toggle, and this must be done multiple times to get a sound to play. ![]() The sounds don't play when the button is pressed. But when sounds are saved to the device from a Mac - there is a problem. The product works fine when connecting to a Windows PC. ![]() Press and hold the button for 3 seconds to go to next sound that is saved. When the device is unplugged, the sounds can be played by the press of a button. The device attaches to a computer using a mini USB, and then MP3 files are saved to the drive, just like saving to a flash drive. ![]() It uses a simple flash drive MP3 player circuit board with speaker (I get these from a supplier over seas). I am an independent inventor/entrepreneur, and I have designed and developed an MP3 Sound Horn for use on kids bikes.
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