【Neckband Designed】: Around-the-Neck Wearing Style With Body-contoured Fit. Made of ultra-light shape-memory alloy, great for easy carrying and all day comfort. Ensures a 100% comfortable fit especially when you are running, cycling, exercising and staying at home or in the Office.【Magnetic EZ-Lock】: This headphone has a magnetic ez-lock which keeps the earpiece attached to the neckband. This makes it very convenient to carry around when it is not in use. You will never worry about the cord/wire dangles around your neck.【Bluetooth 4.1+aptx】: Supports two connected devices simultaneously and automatically connects after being paired successfully for the first time, high-fidelity stereo sound quality with aptx codec. These headphones are compatible with most smartphones, iPhone and Android.【Long-Lasting Usage & Lightweight Design】: Up to 10 hours of music and 300 hours of standby time on only 2 hours of charging. Since it has a super Light Weight Design, the net weight is only 4.58 ounces, you will feel nothing for gym and workout.【The handy button】: With all the control buttons in the front of the neckband, within your eyes sight, easy to control, you can control all functions of music and calls easily via the buttons of the Bluetooth headset.