1、BACK CLIP DESIGN: The music player is designed with a back clip, you can clip it to your clothes or equipment, convenient for you to use when traveling and also when exercising. 2、MEMORY CARD SUPPORT: The MP3 player has a memory card slot, supports expansion up to 8GB, you can use the memory card to store more music. 3、PORTABLE: The back clip player is lightweight, small and easy to carry, does not take up much space and can be used when you are away from home. 4、LONG WORKING TIME: The battery life of the back clip MP3 is long and can work up to five hours, so you don't have to worry about running out of power when you go out, and it is more convenient to use. 5、DURABLE MATERIAL: The MP3 music player is made of premium ABS material, with guaranteed quality, long service life, durable and not easy to damage, making your life better.