With our unique design a comfortable and stable user experience is achieved through the use of our custom ear bud fitting options.</br>Our product is IPX6 compliant to achieve waterproof & sweat-proof use & ensure complete functionality through rigorous use such as exercise.</br>Simple to use. It's convenient and easy to control music or answer a phone call during use. Our headphones also support some voice broadcasting such as 'Siri' with iPhones with most iOS updated devices.</br>Included DSP noise reduction technology results in clearer calls and excellent sound quality without any type of echo.:A2DP technology ensures the utmost user enjoyment through rich tight bass & crisp sharp treble highs through our powerful speakers.</br>Bluetooth can be connected to two devices simultaneously within a range of 10m (nearly 33 feet). Automatic screen display for the battery is available for most iPhone and Android platforms.Extended operation time with up to 8 hours for listening 6 hours of talk-time and 220 hours of charge in standby mode.</br></br>Product Description</br></br><b>Description</b><br> Features and benefits of YIHUAN Bluetooth Headphones:<br> ? Premium sound with rich?? tight bass & crystal clear treble<br> ? Delivers up to 7 hours of use with a full charge<br> ? Comfortable and secure fit with an ergonomic design and multiple ear tips to ensure a customized fit for anyone.<br> ? Premium sweat-proof design<br> ? In-ear noise reduction with DSP technology<br> ? Latest 4.1 Bluetooth technology<br> ? Universally compatible with smartphones?? tablets?? laptops?? and more!<br> <br> <b>Package Includes</b><br> ? Bluetooth Headphones <br> ? S