Semi In-ear Design: Comfort on the earbuds is excellent, you will barely notice them even after hours of wear; half-in build lets you acknowledge your surroundings as you listen to your tunes - when you run outdoor, for example | Pair/Switch in 1 Second: Thanks to the Hall Effect Sensor and Role Switch feature, You can seamlessly pair this earbuds to your Bluetooth devices automatically right after opening the case. And you can flip between Mono and Twin Mode in a second | Hi-Fi Stereo Sound Quality: Equipped with 13mm PU + Protein Membrane Drivers, it delivers wider sound stage with exceptional accuracy and superior Hi-Fi Stereo Sound across the entire frequency range. you’ll experience a whole new world of perfect music | Smart Touch Control: Installed with high-sensitivity touch sensors that smart enough to detect every touch. Softly tap on the earbud to skip songs, adjust volume, answer/reject calls and activate Siri without picking up your phone | USB-C Quick Charge: True wireless earbuds offers stream music for up to 5 hours on a single full charge and pocket-sized charging case extends playtime up to 30 hours; Get stable and fast charging with a USB-C cable - supports 1 hour of playtime after 5 min quick charge