Features:Design: Mini、 Portable、 Cool、 Stylish、Magnetic LevitationFeatures: Magnetic Levitation Supports: Hands-free Calls、 Volume Control 、 LED Shinning、 Bluetooth、 Microphone Functions: Stereo、 AUX Function、 Songs Track Compatible With: PC、 Mobile Phone、 for PSP、 MP5、 Laptop、 for iPhone、 Tablet PC、 for iPad Speaker: 串40 inner magnetic 4肝3W * 1 + bassFrequency response: 90Hz-20KHzSensitivity: 80db ・ 2dbDistance: 10mSNR: 80dBDistortion: 0.3%Size:72*72*85mmBattery: Built-in lithium battery 500MAH Function: bluetooth + Stretch + hands-free + touch screen