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Flyron Technology Co., Ltd. FN-A501 MP3 Alarm Speaker 1. Features Built-in a high quality MP3 player with great sound quality. Incorporated with a 4MB flash memory and a micro SD slot on board. Upload MP3 files to the flash memory easily through the micro USB port on computer.
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Flyron Technology Co., Ltd. FN-A501 MP3 Alarm Speaker Volume control Trigger to play 4th sound Audio output to speaker Trigger to play 3 sound Trigger to play 2 sound Trigger to play 1 sound Power input Micro USB port Micro SD slot 3).