SUPCASE Mini Lightweight Portable Premium Sound Wireless Bluetooth Speaker with Rechargeable Battery - Black, Enhanced Bass, Support Micro SD Card, Free 3.5mm AUX Line-in Cable Premium sound quality with enhanced bass Ultra lightweight portable design, only 7.8 oz Compatible with iPod, iPad, Tablet, Smartphone, MP3 players, CD players, Laptop, Desktop 3 connection modes: Bluetooth Wireless, AUX Line-in, Micro-SD/TF Card Multiple Color Options: Once you pick a color, the choice is easy