[Foldable and Lightweight]: The bluetooth headphones is foldable, more flexible and convenient to carry in your bag or pocket; It weight only 53g, more lighter weight than other neckband headphones in the market. | [Hi-Fi Stereo Sound]: Designed with Bluetooth 4.1 technology with advanced CSR8635 chips, ensuring faster and stable signal connection and transmission (The Bluetooth connection range is about 10meters/32ft away, please pay attention to external signal interference). The CVC6.0 noise cancelling technology can filter out background noise, allow you enjoy high quality sound performance with super bass even you are in a noisy environment. | [Neckband Design with retractable Earbuds]: Ergonomic neckband design, you can wear the headphone on your neck comfortably and perfectly, decrease the pressure of your ear, maximize the portability of listening music on the go. Auto retractable earbuds allows you to pull the retractable wire to the length you want and press the retract button can store the earbuds wire automatically. | [Long Battery Life]: With powerful rechargeable battery, it can support up to more than 10 hours music time, 12 hours talking time, 180 hours standby time with a single charge, great for all day outdoor sports exercise and indoor entertainment. (Note: The rechargeable battery is included and you can check the battery capacity ). | [Vibration Reminder]: When a phone comes, the foldable Bluetooth headphones will remind you with vibration and you will not miss any call even you are in a noisy environment, really sets you hands free, provides your wonderful handsfree experience.