1.[ Lightweight] The wireless neckband bluetooth headphones is foldable and more lighter weight than other neckband headphones in the market, more flexible and convenient to carry in your bag or pocket, provide wonderful handsfree experience, sweatproof, great for outdoor sports exercise and indoor entertainment.^ 2.[ Auto Retractable Earbuds]: One button to control, the auto retractable earbuds allows you to pull the retractable wire to the length you want and press the button can store the earbuds wire automatically, the earbuds wire can be retract more than 5000 times. Premium quality, portable and convenient to use.^ 3.[ Neckband Design & Vibration Reminder]: The excellent neckband design allow you to wear the headphones on your neck comfortably and perfectly, enjoy music on the go. When a phone comes, the foldable Bluetooth headphones will remind you with vibration and you will never miss any call even you are in a noisy environment and the earplugs are not in your ears, really sets you hands free.^ 4.[ Bluetooth 4.2 & noise Cancelling Technology]: Designed with Bluetooth 4.2 technology, ensuring faster and stable signal connection and transmission The Bluetooth connection range is about 10meters/32ft The noise cancelling technology allow you enjoy high quality sound performance with super bass even you are in a noisy environment.