Product description Colour Name:Black True Wireless Sport Headphones We present you a ultra comfortable and portable Bluetooth headphone. Foldable and wireless design, very easy to put it in your bag. Also lightweight on your ear, which makes you feel comfort and freedom during your workouts. CD-Quality Built In Noise-Canceling High-Sensitivity Microphone ensures that you'll be heard in a phone call. Clear sound, high-definition output, you can enjoy a high quality phone call and music experience with this wireless headphone. Connect Two Devices at The Same Time Marathon2 wireless headset can pair with two smart phones simultaneously. You can seamlessly switch between your business and personal phones, and you'll never miss any call. Fast Connection and Great Compatibility This headset is compatible with cell phone, tablet, MP3, and almost all of device with Bluetooth function. Easily and quickly paring with your smart mobile phones under the support of Bluetooth 4.1 Premium warranty Seller Warranty Policy: - 35-Day Money Back Guarantee - 12-Month Replacement Warranty - 7/24 Online Customer Service. Notice: How to connect your phone and the headsets : Please hold the power button for 4-5 seconds till the red light and blue light flashing; Please open your device Bluetooth to search "Marathon2" and then connect.