Why choose our MP3 player:We adhere to the concept of high profitability and create the most satisfying shopping experience for customers. Support for a maximum of 32 extension GB (not included in the listing):Built-in memory card expansion slot, supports a maximum expansion of 32GB. 32GB can store 8000 songs for you to enjoy the joy of music. We use professional intelligent digital noise reduction chips. Deliver HIFI sound. Designed for music lovers. Interface: 1xMini-USB, 1x3.5mm/0.1in, 1x memory card slot. Built-in 250mAh lithium battery. Long battery life, can play more than 5 hours, no need to worry about running out of power. Born to Light Thin: Weighs 47 grams and can barely be felt when you attach it to clothing. It is perfect for sports and hiking. Mini LCD Display:With the mini LCD display, you can see the progress of the song clearly, more convenient to use.