This is a fun MP3 player with lots of features. I have mainly used it for music and haven't yet explored the video, photo or other features. It had wirk pretty well for the things I have used it for. I was able to upload tons of songs and am no where near filling it up yet so I haven't needed to use a sparate SD card. I was also albel to create a separate folder of just upbeat, energetic music I want ot listen to while working out. It is fairly easy to use after taking just a few moments to get familiar with the menu and the controls. The player works good being connected to a speaker with an auxillary cable, earphone and bluetooth, but using bluetooth does drain the battery significantly faster than with corded earphones or an auxillary cable. I have come across a few quirky issues.... sometimes when I'm listening, it just stops and the only thing I have found to get it going again is to turn it off and back on. That can be annoying when I am on the elliptical. I also wish it didn't automatically alphabetize the songs. It is very easy to operate, but take some getting use to. Because the controls are touch controlled, it is best if you click the power button to turn the display off once you have the music playing and set at the volume you want. This not only saves battery, but deactivates the touch buttons so you don't accidentally push them while handling the player. I do wish there was a real volume on the side that could be operated without going through the touch controls. Despite the quirks, I have enjoyed using the player and have gotten great use from it. One thing I would request is that they sell some kind of cases to protect the players.