describe:[Bluetooth 5.1 headset in-ear Bluetooth headset uses cutting-edge Bluetooth5.1 technology, combined with high-sensitivity antenna and strong connectionquality, even in busy areas can provide almost uninterrupted excellent connection.The wireless connection range is up to 10 meters, and the battery performance isimproved.[100 hours playback]: Bluetooth headset, each headset can play for up to 5hours when fully charged. The charging box has an LED power indicator, whichcan monitor the power consumption of the headset and the charging compartmentat any time. And it is a mobile power bank that can charge Bluetooth headsets 20times. You can enjoy about 100 hours of music.[Hi-Fi sound quality] Bluetooth headset 13mm composite speaker, the headsetprovides rich, clear and impressive sound, allowing you to enjoy crystal clear calls.[First-class comfort]: Our earphones have better grip, our wireless earphonescan fit your ears perfectly, whether you are running or dancing; it has an IPX5strong waterproof rating to prevent water and sweat from entering and damagingthe Bluetooth earphones , Suitable for all kinds of strenuous exercise.[Smart Touch]: Tap the earbuds to skip songs, adjust the volume, answer/reject calls,and start the voice assistant to exercise, drive or have a video conference withoutpicking up the phone, you can 0ly switch between single/dual mode , Whilelistening to music.