Adopt Bluetooth 5.0 version, solve the shortcomings of poor Bluetooth compatibility, and achieve compatibility with a variety of Bluetooth devices and mainstream APPs on the marketUsing the imported CSR chip, Bluetooth 4.1 has faster transmission speed, more stable signals, more stable connections, and lower power consumption.physical dimension:Weight: about 17gColor: black, red, blueProduct size: 58 * 22 * 40 (mm)Basic parametersBluetooth version: V5.0Talk time: about 121BListening time: about 10 hoursCharging time: about 5 minutesTransmission distance: about 10 metersCharging compartment capacity: 1000mAhPackage ContentsBluetooth headset * 1Charging compartment * 1USB charging cable * 1Thank you very much for your trust and support, and I wish you a happy life.