Features 1. Use Bluetooth V5.1 module for faster transmission,lower power consumption,stronger anti-interference ability,simple connection,free play; 2. Exquisite model,light luxury retro,home matching,more refreshing and lower design aesthetics,integrated into a sound life; 3. Double metal diaphragm explosive auditory feast; 4. Time carving classic continue forever,,retro knob button; 5. Long ecdureance large battery, 1800mAh high-capacity polymer lithium battery with dual design slow down the state of the playback time up to 6 hours; 6. Stereo phonics the sound is wider and further,Hifi sound quality,super strength 48mm full frequency unit structure; 7. Leather casing,compared to the thinness of the plastic and the coldness of the metal, more warm tone,