True wireless and Bluetooth 5.0. Optimized for Bluetooth 5.0, the wireless headphones are designed to quickly pair with your device and keep it that way. As long as you are within 30 feet of the paired device, you can enjoy a strong and stable connection. True wireless Bluetooth earplug, it offers complete freedom of movement. Fascinating and immersive sound. Using high-quality, high-efficiency speakers, loud sounds can be delivered from a small acoustic box. Our volume-optimized active equalizer will automatically boost low and high points, so music, video and sound are always balanced at any listening level, so you can focus on the music and the sound. 'exercise. safety and comfort. The headset has three sizes of softness and a bendable silicone mouthpiece, so you can find the headset that suits you best. Every surface that touches your ears is made of soft silicone instead of hard plastic, and pressure is applied evenly across the ears. No matter how much you shake your head or jump up and down, there is no need to attach the earhook tightly to the sports earplugs. Weather and sweat resistant. Bluetooth headsets are designed to resist sweat and moisture from the elements, and undergo rigorous quality testing to ensure their durability to ensure they stay in pristine condition, just like you. Their protection level is also IPX5, which means that the electronics of each earphone can prevent splashes, just in case you get wet in the rain. 36H battery life is long. Each charge can provide up to 6 hours of battery life, long enough to power you through almost any exercise. Charge them by putting them in the included charging case. If the phone case is charged, it will automatically charge the headphones. After being fully charged, the protective cover can provide 5 full charges and can be used for up to 30 hours.