The High-quality spotless bass stereo gives outstandingly clear sound with full en-ergetic run and perfect bass. 45° ear movement can't be shaken off and solidly fits the ear.ergonomic design, superimposed three times, firmly wearing in-ear comfortable, wearing it is a kind of enjoyment.With v5.0 Bluetooth innovations, is stable and low-latency,with no inductive delay, smoother video games, penetration, and more stable signals.Wireless earphones comes with built-in 500 mAh battery gives 68 hours standby. Enjoy high-quality sound without stressing about running out of charge.Good Bluetooth headphones with microphone is a necessity for our daily use. This headphone provides crystal sound for music, clear voice for calls, incredible long-playtime, fast and stable Bluetooth connection etc.