High-performance sports earphones: Equipped with a powerful Bluetooth chip, dual-host transmission, effectively improving the transmission speed and bringing a more stable sports experienceHigh-quality sound quality: the second-generation SSQVP-Extreme digital sound enhancement technology, the second-generation Acavity acoustic structure cavity. The low frequency is thick and powerful, and the treble level and penetration are better. At the same time, excellent timbre reproduction can present richer sound detailsOptical sensor and motion accelerometer work together to detect when you're moving so you can exercise as soon as you're readyThe points are finely designed, the curvature of the earphone is exactly the same as that of the surface of the human ear, and the front and rear cavities are connected to balance the pressure of the ear canal and bring a more comfortable in-ear experienceLong battery life: The estimated listening time is about 9 hours, and the playback time can reach about 48 hours with the charging caseWith flash charging technology: about 5 minutes into the charging case, you can get about 1.5 hours of battery life. Dual beamforming microphones pinpoint your voice, and the digital processor filters out external noise and wind to help you make the best callIPX5 waterproof, enhanced sweatproof design to help you do sports more freelyUsing Bluetooth 5.0 version, the power consumption is reduced and the use time is longer. The transmission speed is enhanced, the transmission is more stable, and the delay problem is reducedCompatible with Bluetooth devices such as mobile phones, PC, and notebooks, and supports WINDOWS/IOS/Android operating system Specification: Sound Diaphragm: Aluminized Liquid Crystal Polymer DiaphragmSound unit: 10x 5mm custom Hi-Fi miniature full-range unitAcoustic Structure: ClosedMagnet Type: NdFeBFrequency response range: 50Hz-20kHzImpedance: 16ΩSensitivity: 98+/-3dBMaximum output performance: 30mW (IEC) Package included: 2 x Bluetooth Earphones 1 x Charging Case 1 x Charging Cable 1 x English and Chinese User Manual Other items not include