Sensitivity：> / =95dB
distortion factor：< / =1%
sensitivity：115dB S.P.L at lkHz
Charging voltage ：MICRO USB 5V
Support mobile phone bluetooth, SD card playing music
The volume adjustment, switch, pause/play up and down
Compatible with all external 3.5 mm
Intelligent charging ”
1 * Bluetooth Headphone
1 * USB cable
1 * 3.5 mm audio line
1 *User ManualHigh Fidelity Sound: Big bass headphones with rich mid range and precise high. Even turn to the high volume, the distortion is minimal. Immerse yourself in an emotional sound experience.
Fashionable Design: Sleek color and Folding design make your headphones eye-catching in the street.The design with the metal scale allows you to bend back a little and adjust the tightness
Multiple Connection: Using advanced Bluetooth 4.0 technology. You can insert TF card and enjoy music in the TF card. AUX line in allows music playback from various sources even when not charged – you can use any aux line out from other device.
Built-in Microphone: Support hands free calling. Music will be automatically suspended and resumed during the calls.
Long Battery Life: The battery life is 30 hours from a single charge. And only need take about 1.5 hours to fully charge.When you are traveling or exercising , no need to worry about that it will run out of electricity.