Sun Joyful Portable Bluetooth Mini Wireless Speaker with 4 Colorful Led Light Mode, Support Hands-free, Micro SD Card, Line in, Card Reader Speakers Function, Redial the Last Incoming Phone Call 1.Elegant design with color light (4 different light mode) 2.Support hands-free, Micro SD card, line in and card reader function, 3.Speaker could redial the last incoming phone call, In the phone mode, device will announce the incoming phone number 4. Supports music formats: MP3, WMA,WAV, APE,FLAC. Support Bluetooth Protocol: A2DPAVRCPHFP 5. Bluetooth control range: 15-25M, built-in Li rechargeable Internal 400mAH, charging time: 1-2hours, playing time is 1.5 to 7hours