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By certification 
-Waterdrop design with rubber lanyard,very convenient to carry around.
-TF card slot play and line in play.
-Built-in Bluetooth 2.1 + EDR wireless modle.
-Support iphone, ipad and other devices with bluetooth function.
-Light flash when the volume is larger enough.
-The Bluetooth Portable Stereo Speaker Sound System delivers exceptional sound quality for your Cellphone, Tablet or PC.
-With outstanding sound, it delivers a rich audio experience for your home, office or on the road.
-Bluetooth music controlling function & Hand-free talking
-Built-in Li-ion battery, enjoy wireless music anywhere, anytime.
-Stereo sound output, Built-in bass diaphragm,with perfect Bass effect.
-TF card slot play and line in play.
-Built-in Bluetooth 2.1 + EDR wireless modle.
-Support iphone, ipad and other devices with bluetooth function.
-Light flash when the volume is larger enough.
-The Bluetooth Portable Stereo Speaker Sound System delivers exceptional sound quality for your Cellphone, Tablet or PC.
-With outstanding sound, it delivers a rich audio experience for your home, office or on the road.
-Bluetooth music controlling function & Hand-free talking
-Built-in Li-ion battery, enjoy wireless music anywhere, anytime.
-Stereo sound output, Built-in bass diaphragm,with perfect Bass effect.