Bluetooth 4.1 Technology: Bluetooth 4.1 with strong wireless signal, you can enjoy the music streaming in a 10-meter working distance

VOLUME CONTROL AND PHONE CONTROL: In-cord volume control, easier to work, do a great job of volume or change track while working out, resting, biking and more.Built-in noise-cancelling microphone for your hands-free calling.

SLEEK DESIGN: In-ear earphones and rotatable earbuds guarantee 100% stable and comfortable when exercising, running, climbing, driving, skating, camping, fishing, and other outdoor sports. Small, medium and bid size ear hooks to stable different ear structures.

TANGLE FREE MUSIC AND HANDS-FREE CARRYING: Flat audio cord with a mini clip allows tangle-free music. A handy hard-sided carrying case with a convenient D-Ring snap connector was easier to attach others.

VOICE PROMPTS AND LED FEATURES: Voice prompts are provided for critical functions, like power on/off, pairing, and incoming call. The LED features not only the normal blue/red for pairing and blue for on. but also flashes red when the