Multi functional Design: Support wireless connection via Bluetooth, & wired connection with phones/computer; Support TF card playback, insert the TF card into the headphone to play music when there is no phone High Fidelity & Clear Bass Effect: This headphone supports various sound effects adjustment, easily realize the sound quality you prefer Over-ear & Adjustable headband Design: Adjust the headband for tight and comfortable wearing by yourself, no worries of the headset falling Universally Compatibility: Suitable for most Bluetooth-enabled devices, such as for iPhone6s plus 5S 5 4S and Android smartphones Samsung Galaxy phones and so on Built-in Battery: With high performance rechargeable polymer battery, less than 2 hours of charging time.