Portable speaker with Aluminum shell and display Micro SD card ... Aluminum shell Specifications:1.Compatible for MP3 ,MP4, mobile,computer,iPod ,iPad, 2.iPhone,Flash,Usb Driver and SD ... BL-5C, Playing time 6 Hours6.Audio: Mp3,WMA7.Speaker: 2*3W ,one bass8.Case Material: Aluminum shell9.Slot ... Factory equipped with 200 workers,8 production lines,6 set SMT Machine3.Capacity:30000pcs/Month,ship on time4.The ...