SNEER True Wireless Bluetooth Sports Stereo Headsets Earbuds Bass Headphones Waterproof Earpieces with Charging Station #MetalGray True Wireless Technology:Each earpiece can use as one single and also can use it as together.the Bluetooth can use for two person. As your image,you can listen the same song with your BF or GF when you are running or traval The Bluetooth V4.0 Technology: This is a very portable and sporty pair of wireless Bluetooth earphones, which conveniently enables you to listen wirelessly to your music collection on your iPod, iPad, Kindle or other tablet, and iPhone or other smartphone. What makes these ear buds very interesting were the fact they were the first pair of completely wireless ear buds. There is no wire connecting the two ear buds. You can use them individual as like 2 separate ear buds or match them together so that you'll connect them as 1 unit into your mobile device. Don't make the mistake by pairing them separately (which you can do now with Bluetooth 4) as they will play music back in a weird back and forward delay manner. These small ear buds will last about 4.5 hours on a charge -- which is really great. The earbuds themselves are very light and virtually feel invisible after a few minutes of putting them on. The carrying case/charging cradle itself actually is a charging case as placing the ear buds in there will charge them. Charging time is about 1 hours on the unit, which is quiet fast for somethin. SNEER have the USA Trademark protector,you search SNEER on USPTO offical website