MPOW FreeGo Noise Cancellation Bluetooth 4.0 Headset Advanced Noise Cancellation Technology: With advanced echo and bi-directional noise cancellation technology, you will enjoy clear conversations on both ends of the call with active noise cancellation Connect Two Devices at The Same Time: Pair it with two Bluetooth-enabled devices at the same time and don't miss your calls when you have two cell phones Unique and Stylish Appearance: Unique design is inspired by crescent. With smooth piano lacquer and delicate rubber coating, you will get an awesome fashion experience Comfortable Ear Cushions and suitable for Both Ears: Three Interchangeable soft ear cushions - just choose the suitable one for your ear and enjoy all-day comfort. 180 Degree Flip-boom arm for left or right ear - easy to wear, easy to use Strong Compatibility: Streams music and audio from your cell phone, tablet, MP3 and almost all of devices with Bluetooth function