Secret USB F Micro Mini Audio Dial Mini Professional F Key MP3 Player

Secret USB F Micro Mini Audio Dial Mini Profeional F Key MP3 PlayerAbout the product:1. appearance. Noise reduction. One click . Timestamp. Automatically save files and voice s when power is off. and playing. Play music. Mobile phone connection (need to support OTG function)2. Hang it on the key. Keep the key buckle with you. It is an exquisite decoration and a high-definition pen. Encryption protection3. You can set the paword timestamp for the 4. Built in time chip, with time synchronization function, can record the actual time. There is no sound or light during the 5. One on , keyle design, wire controlled multi-function operation, with deletion function, playback LED indicator6. Continuous for 20 hours, standby for 30 days, 8GB capacity ( for 90 hours)5. Support MP3, WMA, WAV playback, fast forward and fast backward playback