Bluetooth V5.3 technology and automatic pairing Wireless Bluetooth earbuds adopt the latest Bluetooth 5.3 technology to make the connection more stable and greatly improve the transmission speed, so that you can enjoy the low-latency listening experience when listening to music, watching videos and playing games. Take out the Bluetooth running headset from the charging box, connect the Bluetooth device "YYK-580" for pairing, and automatically pair when taking out the second time. [70Hrs battery life with charging case and Type c Fast charging] Bluetooth wireless sports headset with built-in 800mAh charging case. Both headphones can play 10 hours of music after 1.5 hours of charging. The charging case can charge two earphones five times, and with the portable charging case, it can provide 60 hours of music playback (single earphone) and 200 hours of standby time without worrying about running out of power. [HiFi stereo sound quality and CVC8.0 noise reduction] Bluetooth 5.3 chip technology, high-quality 10mm dynamic drive, clear and smooth connection, stable signal, low power consumption. The CVC8.0 noise reduction feature enables in-ear microphones to reduce background noise, allowing you to fully enjoy clear calls. Sports Earhook IPX5 waterproof Running earphone, specially designed soft earhook, completely fit the ear contour, maximize the comfortable wearing experience, will not fall out. In addition, the IPX7 waterproof feature easily protects the sports headphones from heavy rain or sweat during intense workouts and all-weather conditions. Ideal for sports, running, hiking, home office, etc. [One-button control + stereo and mono modes] Bluetooth sports headset with touch sensor, Bluetooth headset can be one-button control on/off, play/pause, skip song, answer/hang up, volume adjustment and other functions, free hands.