[Bluetooth 5.0 Mode/Wired Mode/SD Slot] The Bluetooth headphones over the ear adopt Bluetooth 5.0 technology which can offer more stable transmission speed and lower latency. Built-in SD card slot, can be turned into a MP3. Designed with a 3.5mm aux, just plug in the dual 3.5mm plug cable (not included), and it can be used as a wired headset with mic. [Comfortable and Foldable Design] The soft padded ear cushions are designed for headphones' comfort and noise isolation. The headphone is foldable and only 0.42 lbs. 90swiveling ear cups for single-ear listening anytime. The headband is adjustable and stretchable to find the desired angle you like to fit in. [12 Hours of Playtime & USB Rechargable] Built-in 400mAh rechargeable battery, bluetooth wireless headphones provide 12 Hours of playtime in wireless mode after once charging which makes it the for home, office, school, travel, by teens and adults. USB Fast charging makes you not worry about power shortage problems during long trips anymore. [Stereo Sound & Noise Reduction] With the stereo chip, you will enjoy the ultimate sound effect. With a built-in noise-canceling microphone, you'll get crystal-clear calls. The soft and comfortable earmuffs can achieve partial sound isolation. The buttons on the side will help you better control the volume or song. This noise-canceling stereo headset is a must-have headset to go out, study, travel, and commute. [Wide Application] The headphone is with Mic which is very clear to make a call with others. With a 3.5mm audio jack that works with Condenser microphones, Mixer, Studios, DJ Controller, AMP, E-Drum, Keyboard, Phones, and . Colour:B:Silver Material:Plastic, PU leather, TPU, silicone Package Contents: 1 * Wireless Bluetooth Headphone 1 * USB Cable Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.