Bluetooth version: 5.0Headphone material: ABS plasticHeadphone power: 55 mAhCharging compartment: 450 mAhListening time: about 3 hoursProduct size: charging warehouse 7.5*4.3*2.8cmPacking size 13.5*8.5*3.5cmSpecifications:1. Noise canceling technique helps against loud and annoying noise.2. The controller was designed to control volume, select songs and take calls.3. Even wear for a long time also won't fatigue; they are less likely to fall out, and enjoy your music.4.Perfect stereo headphones with high quality drivers enable you to experience natural clear and super enhanced bass sound.Package Included:1* earphone1 * Instruction Manual1*USB charging cable