Cambond Wireless Bluetooth Headphones for Running Sweatproof Earphones Sports Flexible Earhook Headphones with Mic for iPhone Android, APT-X Audio, Bluetooth 4.1, CVC 6.0 Noise Cancelling (Black) IPX4 Sweatproof Bluetooth Headphones Sport: Never worry about sweat profusely; Take it when you running, doing sports, exercise, going to gym, cycling, hiking, jogging, walking, yoga, housework, reading and relaxing. Keep Stable on Your Ears: The unique design runner-friendly headphones can adjust the flexible ear hooks to your optimal position and fit snugly. Latest Bluetooth Headphones V4.1 Wireless Technology: Strong signal and distance up to 10 meters, just enjoy your stutter-free music; Bluetooth Headsets Support iPhone, tablets, laptops, Android IOS smartphones and other Bluetooth enabled devices. Bluetooth Headphones Long Battery Life: 3.7V 110mAh Powerful rechargeable lithium battery can run for close to 10 hours on 3 hours charge. (Kindly remind: Please charge with DC 5V 500mA power adapter to maintain battery life, and package included the charging cable but did not include adapter.) Noise-Cancelling In-Ear Headphones / Noise Reduction: 1. With APT-X Audio Decode Tech and CVC 6.0 (Advanced Chip: CSR8645), you are able to hear a high quality and clear sound even in noisy environment. 2. The Built-in HD Microphone can transmit your voice the largest quality. 3. Hi-Fi Stereo crystal crisp and gently bass-boosted Sound. (Updated Version, increase 1 pair of sponge ear buds, you may need to choose 1 of 4 suitable size and fit these in deep in your ears to get the full effect.)