Both sounds and body freedom: freedom of sound and body freedom: Free music playback and calling style, freed from the cumbersomeness of cables in all environments. By reproducing the clear high-pitched sound and rich middle-low range where vocals stand out by applying optimum design. Conversation with your favorite music, movies, family, friends, and lovers is comfortable every day, easy and enjoyable in the best environment anytime anywhere. <br> • Easy to turn on: No complicated pairing operation is required. Switching on / off of power just by putting in and out from the case of charging and pairing setting mode with terminal automatically start up. It adopts the high version of 4.2 Bluetooth® core, it can correspond to transmission distance ios and android longer by 10 m. <br> • ● Charging function installed storage case: More troublesome charging than simple, luxurious aluminum charging case, you can charge it from the earpiece side to the left and right by clicking into it. Up to 180 minutes continuous playback with one charge. By fully charging the case you can charge 4 times, and you can play for about 12 hours further. Worrying about running out of batteries and traveling less. <br> • ● Intuitive operation with multifunction button: Not only "Play / Stop Song" at Music Playback "Song Feed" or "Response / Talk on Call", but also "Activate Voice Assistant such as Siri" Intuitive operability that allows full control of smartphone with just the left and right multifunction buttons. <br> • ● Fit comfortably even for long-term use: Stylish design, based on ergonomics, realizes a comfortable fit that fits tightly to the ear even when it moves actively. A sense of unity that makes you forget to wear it. Even in the technical trail, even in town, always fit comfortably.