【 High Fidelity Sound 】- True HD high Fidelity sound featuring latest Bluetooth 4.1 CSR technology and state of the art acoustic components that produce incredible sound quality with deep bass and crystal clear treble. 【 Suppression Technology 】- Connect seamlessly with all Bluetooth enabled devices up to 30 feet away. With noise suppression technology focus on your favorite music and answer calls without skips or missed words. 【 Easy Operation 】- Control buttons On the headphones so that you can play and pause music, adjust the volume, skip tracks, answer and end calls, and activate the voice control of your phone with one Simple operation on the headphones 【 Long Playtime 】- The new and improved Lithium polymer battery allows seamless enjoyment of music for up to 8 hours and 240 hours stand-by with a quick charge of only 2 hours. 【 Comfortable and Stable 】- This bluetooth headphones feature ergonomically designed flexible ear hooks with silicone earbuds to ensure your headphones stay comfortably firm in place to guarantee fatigue free ears and tangle free comfort.