WONFAST Bluetooth Headphone Over-Ear, Upgrade Touch Sensitive Wireless Headset Hi-Fi Stereo Foldable Built-in Micro Support SD/TF Card for Bluetooth-Enabled Devices(Silver) Stereo Sound Quality: With Bluetooth connectivity, pairing with headphone via Bluetooth took a few seconds. Up to the transmission distance of 10 meters, with strong interference, high fidelity stereo sound for great communication and music listening Foldable Design: headphones feature a on-ear foldable design, save more space when on storage. The headphones are extendable to fit many sizes of heads. headphones are very comfortable and fit head very nicely. Wireless & Wired Function: The headphone can be used as wired via 3.5mm plug port. Wireless can be connected via bluetooth connection. Built-in Microphone: Hand-free receiving call can be achieved with built-in microphone. Voice chat and call communication, it make life more enjoy via microphone function. Never worry about miss any phone call ERGONOMIC DESIGN : This headphones are built from materials that are extremely nice to touch which provides the model premium outlook. The super soft memory-protein foam leather earmuffs and headbands contribute to maximum comfort regardless of how long you use them.This headphones also come with a protective Premium Case - a great way to reduce wear and tear.