1, can play you SD/MMC card, usb, MP3 format audio files. No need to switch, remember automatic loading. Enjoy music and moving music powerful multimedia speakers, perfect listen to your phone music player, MP3, MP4, PC, laptop computers.

2, the built-in rechargeable lithium batteries can work 2 to 5 hours, charging time by 2-3 hours.

Fine workmanship, feel super heavy feeling in your hand, is worth buying a product.

Adjustable volume, with high capacity, 1000MAH lithium batteries. A charge can use 4-5 hours. Bass effect is obvious. Small size products. Easy to carry.

Can insert SD card, mini SD card (card), TF card (card), U dish. Can also external computers, MP3, MP4, notebook computers, audio output