【Open-Ear All-Day Comfort】These innovative true wireless earbuds feature an open-ear listening design that completely avoids in-ear pressure. 【Secure C-Shaped Lightweight Fit】The unique C-shaped clip allows each earbud to weigh just 5.28g, ensuring they sit gently and securely outside the ear canal. 【Directional Sound Technology】These earbuds use reverse sound field acoustics and an advanced near-ear fit to minimize sound leakage through inverse wave technology. 【Smart Display】The integrated LED display shows the power level of both the earbuds and the case in real time, so you’re always ready to go. 【Stable Bluetooth-compatible 5.4】Latest Bluetooth-compatible 5.4 technology ensures faster, more stable connections with low latency for uninterrupted calls and smooth music streaming. Specifications:? Material: PC+ABS Bluetooth-compatible version: 5.4 Listening time: 6 hours Listening time with charging case: 24 hours Battery capacity: 50mAh (earphones), 500mAh (charging case) Charging case rated input: DC5V?300mA Charging time: 1.5 hours (earphones); 2 hours (charging case); 2.5 hours (earphones + charging case) Frequency response range: 2.40GHZ-2.480GHZ Speaker size: Ф16mm Interface: USB-C