Support TF card player
Supports Bluetooth stereo， excellent sound quality， bass rock
Audio transmission: 10M
Compatible with iPhone， iPad， and all phones that support Bluetooth stereo function
Bluetooth music control function can control play / pause， previous track， next track
Built-in 500mAh lithium battery， can use Micro USB cable to charge it
Bluetooth 3.0， built-in high-fidelity microphone core， a key to answering the phone

Parameter
Frequency response: 20 - 20KHz ( + / - 3dB )
Signal to noise ratio: 80dB
Outside diameter: 45mm
Magnetic: 4Ohms
Line in interface: With 3.5mm plug
Power input: 5V / 500 - 1000mA
Maximum support 8GB TF card
Material: Silicone + ABS