Compact: Compact wireless earbuds that fit your ears and ergonomic, and bring you perfect listening, even if used for a long time, it will not hurt your ears.Bluetooth Version 5.1: Our newest Bluetooth headsets adopt the most advanced Bluetooth 5.1 technology, the link is more stable, the pairing is faster, and it can work as a stand-alone device. Simply remove the headset from the charging box and the last paired device will be connected automatically, suitable for Android, iOS and Windows.Lightweight and Portable: This sports headset adopts lightweight (4G), portable, hands-free design while enjoying the freedom of wireless charging, portable, sports, travel and learning.High Fidelity Sound Quality: Our wireless earphones use 10mm diaphragm and high definition rendering technology, which can output amazing sound quality with clear bass. Even in a noisy environment, you can listen to music without being affected.Working time: A bluetooth headset can provide 5 hours of listening time on a single charge. The mini charging box can be charged multiple times and can provide up to 30 hours of battery life.