Sabbat X12 Ultra is one of the few inner-ear earphones among true wireless earphones. TWS (True Wireless Stereo) technology enables completely independent wireless left and right: Completely independent wireless stereo earphones with no cables connecting the left and right. It uses the latest Bluetooth chip and supports AAC, aptX, and TWS Plus, enabling high-quality music playback on a variety of devices. Small, lightweight earpieces for high-quality stereo music playback by simply wearing them in both ears: about 7 hours of continuous music playback on a single charge. The included charging case allows for 4 full charges and can be used for up to 35 hours. Various operations can be performed with the buttons on the earphones (play/stop, volume adjustment, song forward/backward) Pursuing beauty when wearing earphones: The shape fits the shape of the ear when wearing the earphones, and the protrusion is minimized as much as possible, giving a smart impression as if you are using custom earphones. It is an inner ear type earphone that is rare in true wireless earphones. Unlike the canal type, it does not go into the ear, so there is no foreign body sensation or pressure sensation. High-quality calls: Equipped with a high-performance microphone with noise cancellation that allows you to make calls while wearing it, you can make high-quality calls. The call audio can also be heard from both earphones, so you can make a natural call. Easy to use with the auto-pairing function: All you have to do is register for the first time, and then just take it out of the case and it will be automatically connected, so you can use it easily. Waterproof IPX5 compliant: IPX5 standard compliant, so you can use it without worrying about sweat or water droplets. Auto Power OFF/ON: Just take it out of the carrying case to turn it on, and after use, just put it back in the case to turn it off and go into charging mode. Completely wireless with a Qi-enabled charging case: no cables from charging to use. * Qi-compatible chargers are sold separately. Reliable and complete domestic customer support: Is it a malfunction or how to operate by a Japan specialist? Support if you think. Please feel free to contact us in case of emergency.