Stable connection up to 33 ft for easy music control and phone use at home, in the office, or during exercise. When you remove the bluetooth earbuds from the charging case, they automatically connect to your phone. The headset is equipped with powerful Bluetooth and sound processing chips using the latest tech. It can connect to two devices with mic quickly and easily. Connectivity range up to 50 ft (15 m). In open areas, range extends to about 130 ft (40 m). The sport earbuds are IP7 waterproof and rain proof, making them sweat and rain resistant for workouts and outdoor use. Enjoy the freedom of hands calls and music while driving, running, or working. Use scenarios Daily commute or office use: pair to your phone and laptop or other Bluetooth devices for seamless calls and music without repeatedly reconnecting. Gym, running, or outdoor activity: rely on IP7 water resistance to handle sweat and rain while you train or exercise outdoors. On the move and multitasking: take calls and listen to audio while driving or performing tasks, with the convenience of auto connection when removing from the case and quick pairing to multiple devices.