The UGREEN HiTune S5 (WS210) are open-ear wireless earbuds designed for those who want to enjoy their audio while staying aware of their surroundings. They utilize a 12mm dynamic coil driver with a biological diaphragm and directional audio technology, which helps maintain sound clarity and spatial positioning without blocking the ear canal. This open design ensures better breathability and comfort during long sessions, further enhanced by skin-friendly materials and soft silicone cushions. Equipped with Bluetooth v5.4, these earbuds offer a stable connection across various platforms including Android, iOS, and Windows. You can expect up to 6 hours of continuous playback on a single charge, extending to 24 hours when using the USB Type-C charging case. For calls, an omnidirectional microphone with AI active noise reduction helps filter out background sounds so your voice remains clear. With an IPX5 rating for sweat and splash resistance and a total weight of just 50g, they are well-suited for outdoor activities or gym workouts where you need to remain mindful of traffic or other people. The low latency of 80ms also makes them a reliable choice for watching videos without noticeable audio lag.