IS-023 Emergency Solar Hand Crank Radio Dynamo 2500mAh Flashlight, MP3 Player TF Card Speaker, Automatic Scan and Storage Channel, Idea for Camping Travel Hurricane Blackout, LED Screen FM/AM (Black)

listened to 32gb micro sd card full of my music and it sounds ok. bought it for emergency backup if power goes out so will not be using it much. tried everything out and i believe it will hold up for what i'll need it for.