Overall this device is very easy to use once you know how to turn it on, except the instructions are too short and the prompt is quite loud. Otherwise it's really easy and fun. It's so much fun to connect to YouTube, turn on the song you like, and sing along (don't forget to turn on "Mic Volume" above). I'm adding a few instructions, hope this helps: (1) The power button is on top of the scan/LED button on the top, not the side panel. (2) How to charge the battery: I use the charging cable the same way I connect my mobile phone, the USB end to the power side and the smaller end to the device. (3) TF card is similar to SD card. I used a 32GB SD card with music loaded on it and I can sing along to those songs. I haven't tried the recording but I'm glad I can follow the songs on YouTube and sing along for the price paid.
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