Bluetooth 5.1: Bluetooth earphone adopt new Bluetooth 5.1 technology, powerful for more stable transmission and lower power consumption. It has a range of up to 10 meters with a stable connection. Whether you're at home, the gym, or on the go, don't worry about a disconnected connection.Ear Hooks Design for Sport: bluetooth earphone uses flexible ear hooks specially designed for running and fitness to achieve stable wearing effect, and is equipped with three earplugs (S / M / L). The ergonomic design and soft silicone ear tips ensure that your headset stays secure and comfortable. You don't have to worry about the headphones dropping out when you run or play sports.Outstanding Stereo and Sound Quality: Unique stereo design provides high quality sound that really makes you feel the music. In-ear headset with CVC 8.0 noise reduction technology can isolate external noise, ensuring you high-fidelity stereo sound quality while listening to music and answering calls.IP7 Waterproof: With Nano coating, the sports bluetooth earbuds can repel sweat and it is a good choice for intense workouts and all weather conditions. It can prevent sweat from entering the headphones while exercising, but don't suggest bring it to swimming.Automatic Connection and Multifunction Physical Button: Once the Bluetooth headset is successfully paired for the first time, just remove the headset and they will be automatically paired. Is equipped with multi-function physical button to reduce accidental keys and support triple-press voice command to activate phone voice assistant.