Stereo HD Fidelity: Our wireless headphones feature high performance composite diaphragms that combine and reduce sound distortion, provide deep bass and treble, and provide a pleasant musical experience. A high quality Bluetooth headphones with built in microphone, you can make calls easily, you can chat with your friends or speak more clearly while driving and listening to music without being affected by external influences.CVC 8.0 Intelligent Noise Reduction Technology: Use CVC intelligent noise reduction technology, it can restore high fidelity sound quality.Bluetooth 5.1+EDR Wireless Technology: Compared with the traditional Bluetooth 4.2, this wireless earphone has faster transmission speed, longer transmission distance and greater data transmission. It is powerful and stable, delivering high quality, low latency and continuous and stable audio signals. Bluetooth in ear headphones have a wireless connection distance of at least 10 meters (33 ft). Calling and playing games will not lag, and it is suitable for most smart Bluetooth devices.Stereo HD Fidelity: Features high performance composite diaphragms that combine and reduce sound distortion, deep bass and treble, and provide a pleasant musical experience TWS Stereo Mode: When two headsets are interconnected in TWS technology, they form a surround sound system, bringing a rich sense of hearing.Specification:Item Type: Wireless EarphonesBluetooth Version: 5.1+EDR Support Protocol: A2DP, AVRCP, HFP, HSP, SPPHeadphone Speaker: F8mmHeadphone Battery Capacity: 50mAh Storage Box Battery Capacity: 2000mAhTransmission Distance: 10mTalk Time: 4 5 HoursPlay Time: 4 5 HoursHeadphone Charging Time: 1 Hour Charging Time Of Storage Box: 2 HoursColor: Black Package List: 2 x Earphones1 x Charging Case1 x Charging Cable4 x Extra Silicone Ear Tips1 x User Manual