1. One-Step Automatic Paring:Just open the charging case and the headphones will automatically enter into pairing mode.The next time you open the case, it will automatically reconnect to the last-paired device. 2.Single/Stereo Mode:This wireless earbuds can flexibly switch between single and stereo mode.Use it as a mono earbud to take calls or listen to music, crossing the street or in the sport. 3.IPX8 Sweatproof:With IPX8 rating, this wireless earbuds are resistant to sweat, water and rain.Bluetooth earbuds can endure and work flawlessly under different weather conditions. 4.USB-C Quick Charge and 30-Hour Playtime:With USB-C quick charge, only takes half of hour to charge the case can be used for 2 hours. A long lasting barttery life offering up to 30 hours of Playtime. 5.STEREO SOUND WITH POWERFUL BASS:With 10mm dynamic drivers, wireless sports headphones provides the fantastic sound quality with powerful bass sound and crystal-clear voice calls at any volume. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-Dadangjia