4 Mics & Stereo Sound QualityEach wireless earbud has built-in 2 microphones, 4 dedicated microphones can achieve precise voice pick-up and isolate external environmental noise through algorithms, make sure other people hear your voice clearly. Get clear calls anywhere you go, giving you an immersive listening experience.60 Hours Playtime & Stereo and Mono ModeThe impressive 8 hours of listening time on a single charge, bluetooth headphones get a total of 60 hours of uninterrupted music playback. The wireless headphones can switch seamlessly between stereo and mono mode. Both earbuds can work together or be used separately. Built-in dual LED power display make it more clear to show the battery power of the case and wireless headphones.Comfortable Design & IPX6 WaterProofThese sport wireless earphones are ergonomically designed to provide a snug fit while ensuring fatigue-free and long-lasting comfort. The flexible earhooks snugly fit your ears without falling out even for intense workouts. There are eartips in 3 sizes(S/M/L) for your choice to get the most suitable fit. The IPX7 waterproof design protects your wireless headset from sweat and splashes, which is ideal for sports, gym, workout, hiking,etc.Bluetooth 5.3 & Auto PairingThe Bluetooth 5.3 chip ensure that the bluetooth headphones connects quickly and stably within 15 meters, pictures and wireless earphones' sound are synchronized to take you better using experience. After pairing the devices for the first time, the headphones will automatically connect when you take them out of the charging case.