I9s TWS Bluetooth

♬24+ HOURS OF QUALITY SOUND - CHARGE WHILE ON THE GO : The charging case with built-in 400mAH battery is portable, light, and compact to carry outdoors to recharge your earbuds 4-5 times so you don’t feel stranded. Go out throughout the day without power shortage and enjoy your songs while running, exercise, and other activities. IN ARE UPGRADE IT TWS-I9S YOU CAN USE earbuds IN TWO DIFFERENT DEVICES ♬FAST PAIRING : Engineered with industry-leading bluetooth 5.0 technology, these wireless earphones preserve accurate and undistorted connection within 33ft (10m) just the the way artists intended. Probably the most simple tech bluetooth earbuds device you've used before. The in ear headphones will automatically turn on and connect to your phone when removed from the charging case, but you need to manual select TWS on the bluetooth list of your phone when the first connection ♬SUPERB SOUND QUALITY:The wireless headphones equiped with the lastest bluetooth 5.0 chips and HD rendering technol