T22 Open Ear TWS Bone Conduction Wireless Headphones Music Sports Bluetooth Earphone with Mic - Black+Tarnish •High-performance sports earphones: Equipped with a powerful Bluetooth chip, dual-host transmission, effectively improving the transmission speed and bringing a more stable sports experience •High-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 details •Optical sensor and motion accelerometer work together to detect when you're moving so you can exercise as soon as you're ready •The 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 experience •Long battery life: The estimated listening time is about 9 hours, and the playback time can reach about 48 hours with the charging case •With 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 call •IPX5 waterproof, enhanced sweatproof design to help you do sports more freely •Using 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 reduced •Compatible with Bluetooth devices such as mobile phones, PC, and notebooks, and supports WINDOWS/IOS/Android operating system •Specification: •Sound Diaphragm: Aluminized Liquid Crystal Polymer Diaphragm •Sound unit: 10x 5mm custom Hi-Fi miniature full-range unit •Acoustic Structure: Closed •Magnet Type: NdFeB •Frequency response range: 50Hz-20kHz •Impedance: 16Ω •Sensitivity: 98+/-3dB •Maximum 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