One Step Pairing When taken out from the charging case, over ear Bluetooth ear buds will pair automatically and reconnect the most recently connected Bluetooth device. Superior Sound Quality The unique stereo sound quality and design gives you the perfect sound, and you can feel the more realistic music. Crystal clarity and deep, resonant bass with delicately tuned sound signature delivers you the immersive sound sound. Comfortable Wearing Equipped with 3 pairs of replacement earmuffs (L / M / S), the lightweight material offers secure comfort without pain, which you can choose the ones that fit your ears perfectly. Wide Compatibility The earbud with earhooks can be connected to almost all devices that support Bluetooth. For example: computers, laptops, tablets, smartphones, etc. Intelligent Voice Assistant Triple-click either workout headphones to activate your voice assistant such as Siri, Google Assistant. Voice-control your phone without lifting one finger to make it easy for you to live a healthy life.