Outdoor Waterproof Portable Bluetooth speaker supports hand free calling

Support MP3 format playback from Micro SD card.
With microphone hands free phone-answer funciton.
With 3.5mm stereo LINE IN cable.
With Bluetooth audio.
Compatible with PC, Mp3, Mp4, iPod, cell phone…
Built-in lithium battery can work about 5 hours.
Transmission distance: within 10 meters
Built-in lithium battery 1200mAh.