Fast and Stable ConnectionInstant Pairing, 20ms Ultra-low Latency - The Bluetooth chip combines flash-pairing technology to double the signal transmission speed, increase sound quality transmission fidelity by 50%, and almost eliminate audio and video latency, ensuring a stable connection within a range of 15 meters even in busy crowds. C-bridge DesignThe C-bridge made of high-performance Ni-Ti shape-memory alloy snugly fits the majority of ears. Secure Fit with ergonomic design based on extensive global human ear data for multiple micrometre-level size optimization, the earbuds feel tailored to your ears. Fast ChargingThe wireless earbuds provide up to 7 hours of continuous use on a single charge, while the charging case extends the battery life to a full day. With fast charging capabilities, you can always have your open ear headphones ready for use, ideal for both travel and daily activities. Smart Touch ControlEffortless Control at Your Fingertips - Equipped with sensitive touch co