Description: Support 3 music playing modes: insert 3.5mm audio cable, insert TF memory card or turn on Bluetooth mode. The bluetooth over ear headphones adopts a foldable design, which saves space and is very convenient for storage and travel. The earmuffs are made of skin-friendly fabric, and the super soft ear pads can be worn for a long time and are more comfortable. Built-in microphone, support hands-free call. It provides DTS stereo audio quality and background noise cancellation. Specification: Color: Black Model: B39 Size: 7.53.27.1in Material: ABS plastic Bluetooth distance: 10 meters Impedance: 32ohm TF card supports 32G Charging port: micro USB Charging voltage/current: 5V/1A Sensitivity: 96dB +/- 3dB Package includes: 1 bluetooth headphones 1 audio cable 1 USB cable Note: The color may be slightly different due to the color calibration of each monitor. Due to manual measurement, please allow a slight measurement deviation.